Back
Fondant Densité is a conditioner for thinning hair designed to treat fine and thinning hair from the inside. This hair strengthing conditioner contains Hyaluronic Acid for hair that offers hydration and resilience to plump the hair while Intra-Cylane® Minerals for strength and structure of the hair from the inside through a 3-dimensional framework, making thin hair appear thicker. This lightweight, silky conditioner for thinning hair replenishes hair to provide texture, substance and resilience for an immedite bodifying effect. Thinning fine hair is a concern of the past with the help of Fondant Densité, our conditioner for thinning hair.
- Hydrates & plumps hair fiber
- Strengthens the structure of the hair
- Enhances hair's texture
- Replenishes & adds resilience
- Hair is more resistant to breakage
- Fuller with more body
- Thicker looking hair for fine hair
Apply to shampooed and towel-dried hair. Leave in for 1-2 minutes.
Rinse thoroughly.
In case of contact with eyes, rinse them immediately.
Rating & Reviews
SNL1952
51.777920308E12 04/05/2026
Excellent product.
[This review was collected as part of a promotion.] The Densifique Conditioner makes my hair feel smooth and makes it manageable.
Originaly posted on kerastase-usa.com
Sarinha
51.777589114E12 30/04/2026
Smooth hair
I loved it, your hair will change, it’s worth it !!!!!!
Originaly posted on kerastase-usa.com
Cillians Girl
51.777589114E12 30/04/2026
Save your hair!
I have fine and baby thin hair which was damaged by years of coloring, and my hair is falling out due to surgery. This stopped my hair from falling out. I was amazed, love it
Originaly posted on kerastase-usa.com
ShariR
51.777457712E12 29/04/2026
Little goes a long way
Only use a pea size amount for a smooth tangle free result
Originaly posted on kerastase-usa.com
PRS7869
11.777326309E12 27/04/2026
Read the directions on the bottle very carefully!
The directions on the bottle CLEARLY state, "Apply to shampooed and towel-dried hair. Leave in for 1-2 minutes. Rinse toughly". So, you're telling me I have to take a shower, towel-dry my hair, apply conditioner, wait1-2 minutes than GET BACK INTO THE SHOWER TO RINSE!!!! That's like taking 2 showers. What working adult has time for that??
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center 27/04/2026
We understand how those directions could seem frustrating and time-consuming! The reason we recommend applying to "towel-dried" hair is that our formulas are highly concentrated with active ingredients. When hair is dripping wet, the water fills the hair fiber and can cause the product to slide off or become diluted, preventing it from absorbing deeply. You certainly don't need to step out of the shower or take a second one! To get those salon-grade results efficiently, we simply suggest squeezing the excess water out of your hair with your hands or doing a very quick 5-second blot with a towel before applying the conditioner. This small step ensures the product can penetrate the hair fiber effectively while you finish your shower routine. Thank you for your honest feedback, and we hope this tip helps save you time while still giving you the beautiful results you expect! If you have more questions, feel free to reach us at 1-877-254-9949.
Eczema issues
31.777400358E12 28/04/2026
Overall luxurious
Overall a fabulous product, I absolutely loved how soft my hair was it was so luxurious, the only trouble was that I didn't realize it had sulfate products in it and I have eczema on my scalp so I had a pretty uncomfortable breakout from it. I didn't see anything about that in the products when I was buying them and I think it should probably be advertised more clearly or perhaps the people who have made the product should consider removing it since it's a pretty common thing people prefer not to have.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center 28/04/2026
We are sorry to hear about the experience you had with Densifique Fondant Densité Conditioner. We would like to speak with you directly about it. Please give us a call @ 1-877-254-9949 for assistance and provide the case # 46291399. Looking forward to speaking with you. It would be helpful if you could have the product available when you call.
irina1
51.777383022E12 28/04/2026
More volume
[This review was collected as part of a promotion.] I mix and match my routine - I use this conditioner with blonde shampoo and with a matching line products. It works great and doesn't feel heavy. With my shorter hair it last for a while and I only use a dime size amount.
Originaly posted on kerastase-usa.com
your_travel_pharmacist
51.777158908E12 25/04/2026
Soft, fuller-looking hair without heaviness
[This review was collected as part of a promotion.] I really enjoyed using this conditioner. It feels lightweight but still provides great hydration. My hair feels soft, smooth, and looks fuller without being weighed down. It also helps with detangling and makes styling much easier. After a few uses, my hair looks healthier and has more volume. The scent is pleasant and luxurious. I would definitely recommend it.
Originaly posted on kerastase-usa.com
Mindy12
51.777383022E12 28/04/2026
Fabulous!
My hair looks absolutely beautiful after being thin and lifeless. 1st product that actually works!
Originaly posted on kerastase-usa.com
Kebela
51.776882613E12 22/04/2026
Amazing
[This review was collected as part of a promotion.] Help me to stop loosing my hair making it stronger
Originaly posted on kerastase-usa.com
Nancyatx
51.776902407E12 22/04/2026
Perfect for 48yo thinning hair
Love! I’ve tried so many for my thinning, aging hair. This made is smooth and soft! Highly recommend.
Originaly posted on kerastase-usa.com
TCmomma
51.776977112E12 23/04/2026
Amazing product
[This review was collected as part of a promotion.] I love the feeling of this conditioner and I can already feel the difference after using this for one month.
Originaly posted on kerastase-usa.com
Lisage
51.776780918E12 21/04/2026
Love it!
The conditioner adds a subtle thickness to my hair, doesn’t weight it down and smells great!
Originaly posted on kerastase-usa.com
kimmm1
51.776808813E12 21/04/2026
love my gray hair
A little goes a long way, it is nice having hair that feels smooth and bouncy without the static.
Originaly posted on kerastase-usa.com
ShampooGirl7
51.776808813E12 21/04/2026
Love it.
[This review was collected as part of a promotion.] Makes my hair super soft and thick. 10/10 best conditioner ever.
Originaly posted on kerastase-usa.com
Poison
51.776808813E12 21/04/2026
I be usin this stuff SO MUCH <3
[This review was collected as part of a promotion.] My hair eats this stuff up every two-three days. This product STAYS in my hair day routine.
Originaly posted on kerastase-usa.com
Terisa
51.776808813E12 21/04/2026
Excellent
[This review was collected as part of a promotion.] This is the best & doesn’t take much therefore lasts. I highly recommend it.
Originaly posted on kerastase-usa.com
Anonymous
51.776611717E12 19/04/2026
Excellent
Wonderful conditioner with lovely scent. Leaves my hair shiny and conditioned from all the colorings I put it through.
Originaly posted on kerastase-usa.com
Mokaloka
51.776116713E12 13/04/2026
Fuller hair
This really does work. Hair not so lifeless. It feels soft and voluminous.
Originaly posted on kerastase-usa.com
Morning Coffee
51.775596513E12 07/04/2026
My favorite
[This review was collected as part of a promotion.] I use this with its companion Densifique shampoo, and I am constantly getting compliments on my hair. It's creamy, smells wonderful, and leaves my hair soft and shiny.
Originaly posted on kerastase-usa.com
SarahJupiter
51.775328317E12 04/04/2026
I love this conditioner soo much!
[This review was collected as part of a promotion.] I love how supple this product makes my hair feel and look. Perfect for my thinning hair.
Originaly posted on kerastase-usa.com
Brendak
51.774881017E12 30/03/2026
Will never go back to my regular..
This product is by far the best product I have used in decades. Exactly what my light thinning hair needs.
Originaly posted on kerastase-usa.com
Puddin Pie
51.774982715E12 31/03/2026
Wonderful product
This is amazing stuff. Makes my hair soft and manageable. Does not weigh it down.
Originaly posted on kerastase-usa.com
Bob2777
11.775441003E12 05/04/2026
💩
Irritated the scalp, and the fragrance doesn’t smell like you’d expect from a ‘luxury’ brand. I got this product on a dramatic discount and it still felt overpriced, you’d probably get similar results from John Freida, Kerastase is falling off.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center 01/04/2026
We are sorry to hear about the experience you had with Densifique Fondant Densité Conditioner. We would like to speak with you directly about it. Please give us a call @ 1-877-254-9949 for assistance and provide the case #45918066. Looking forward to speaking with you. It would be helpful if you could have the product available when you call.
Irobert
51.774666811E12 27/03/2026
love this line for fine hair
[This review was collected as part of a promotion.] I have used this product for years and it's the only volume products I have ever used that doesn't make your hair feel awful. I love it!
Originaly posted on kerastase-usa.com
Kandace
51.774899919E12 30/03/2026
Must have for fine hair
Love this conditioner. I have fine hair that requires conditioner but am challenged to find one that doesn't weigh it down or make it oily. This product has checked all the boxes for me.
Originaly posted on kerastase-usa.com
Aimee Lyn
51.774484109E12 25/03/2026
Want fuller, thicker hair?
I can definitely see an increase in the fullness and volume of my hair when using this product. Smells amazing too.
Originaly posted on kerastase-usa.com
Anna Elise D
51.774574111E12 26/03/2026
Excellent body, softbess
Love the smell… leaves hair feeling thicker and softer.
Originaly posted on kerastase-usa.com
Hopeful26
51.774575012E12 26/03/2026
Thin hair
[This review was collected as part of a promotion.] My hair is thinning with menopause but this product has made my hair ain’t and thick!
Originaly posted on kerastase-usa.com
Vee325
51.774298739E12 23/03/2026
Shiny and soft
I ordered the Densifique Fondant Densite Conditioner and I love how it makes my hair shiny, soft and manageable. I have very long hair so a good conditioner is a must! This is it!
Originaly posted on kerastase-usa.com
Anonymous
51.774451713E12 25/03/2026
Quickly Noticed a Difference in the Thickness
Love this! A bit speedy, but doesn’t require a lot.
Originaly posted on kerastase-usa.com
Deb Kas
51.774258217E12 23/03/2026
Perfect for thin hair.
[This review was collected as part of a promotion.] I used this on my soft thin hair due to chemo. I’m used to thick curly hair so this is new. But I love how Densifique works. My hair has some mass with it
Originaly posted on kerastase-usa.com
Avi juliana
51.773962106E12 19/03/2026
Best conditioners pair with the shampoo
[This review was collected as part of a promotion.] For me i always need both shampoo and conditioner. Im very satisfied with this brand and this product, i use a lot of this product from serum, masque, hair oil, parfum for hair because i love it, everything from kerastase the best for me
Originaly posted on kerastase-usa.com
Sunshinelady67
51.774206907E12 22/03/2026
Excellent quality!
I appreciate the thickness of this conditioner, and how it makes my frizzy color treated and aging hair feel softer and tamed.
Originaly posted on kerastase-usa.com
Tati_Teixeira
51.773931511E12 19/03/2026
Densifique Fondant Densité Conditioner
[This review was collected as part of a promotion.] This conditioner is very lightweight but still moisturizing. It doesn’t weigh my hair down and helps with detangling and softness. I noticed my hair feels smoother, more manageable and with a bit more movement. It pairs really well with the shampoo and gives a natural, healthy finish.
Originaly posted on kerastase-usa.com
Stacey317
31.773942517E12 19/03/2026
Thick formula. Too heavy for my fine hair.
Thick formula and too heavy for my fine hair. Was hoping for density and making my hair fuller but it did the opposite, making it heavy and limp.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center 19/03/2026
Oh no! We are so incredibly sorry to hear about your spill—we completely understand that 'Grrr' moment! It is heartbreaking to lose such a divine-smelling product so soon after getting it. We truly appreciate your feedback regarding the dropper length and the cap; we are always looking for ways to improve our packaging to prevent exactly this kind of situation. While we are so glad you loved the formula and the 'divine' scent, we understand the frustration of having to restock so quickly. Please reach out to our team at 1-800-331-1502 with your order details. We would love to see how we can help you get back to your hair care routine!
jdp1225
51.77378211E12 17/03/2026
It works!!!!
I started using Kérastase Densifique Bain Densité Shampoo & conditioner about a year ago and I love it. It makes my fine hair look so much fuller and smells amazing. If your hair is like mine and feels a little thinner with age, it’s definitely worth trying—I think you’ll love it too.
Originaly posted on kerastase-usa.com
Maggie
41.77385064E12 18/03/2026
J’aime !
Mes cheveux sont très fin et avec Densité ils deviennent plus dense et plus gérantes
Originaly posted on kerastase.fr
Dr Pepp
51.773771313E12 17/03/2026
Best for Thin Hair
[This review was collected as part of a promotion.] This is the first time I have used this product. It gives my hair such a nice texture and more denseness. I will be purchasing other Densifique products!
Originaly posted on kerastase-usa.com
Jlagymnastics
51.773771313E12 17/03/2026
Great product
[This review was collected as part of a promotion.] I love this conditioner and the smell is amazing! It really adds volume to my hair.
Originaly posted on kerastase-usa.com
Erica Z
51.773108009E12 09/03/2026
I love this
I love the results, but especially love the fragrance
Originaly posted on kerastase-usa.com
SuzieS
51.773344717E12 12/03/2026
Worked perfectly
[This review was collected as part of a promotion.] Left my hair feeling full but still light and bouncy. Soft and volume.
Originaly posted on kerastase-usa.com
Becky la
31.77342336E12 13/03/2026
Densifique Fondant Densité Conditioner
[This review was collected as part of a promotion.] I don't find this product to be very conditioning. I still need to add leave in conditioner spray after.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center 13/03/2026
At Kérastase, we believe in the power of the 'bespoke' ritual—layering textures to meet your hair's unique needs. We are sorry to hear that this particular formula didn't provide the level of deep conditioning your hair requires on its own, but we are delighted that you've found success by pairing it with a leave-in spray! Depending on your hair's thirst, you might find that one of our richer 'Thermiques' or a 'Masque' treatment would provide that foundational softness you're looking for. Our experts would love to help you refine your layering technique at 1-877-254-9949 to ensure every strand is perfectly nourished and protected.
ValentinaJ
51.773000012E12 08/03/2026
Great product
Cleans without drying out the hair and helps hydrate while enhancing definition. It also leaves the hair soft, shiny, and with less frizz.
Originaly posted on kerastase-usa.com
Ruth F
51.773251126E12 11/03/2026
Love!
Absolutely amazing! bought the whole set and wouldn’t go back.
Originaly posted on kerastase-usa.com
DomciaS
51.773121512E12 10/03/2026
A conditioner that truly makes a difference
I bought this product for my mom as she was complaining about losing a lot of hair when brushing. She’s been using this conditioner for about a month now and she’s praising it. Her hair is visibly fuller and she’s told me that finally she’s not losing a lot of hair when brushing.
Originaly posted on kerastase-usa.com
Anonymous
51.772670606E12 04/03/2026
Wonderful product!
Best conditioner that I've found. I have age related thinning and it rinse clean and doesn't weigh my hair down so it feels fuller.
Originaly posted on kerastase-usa.com
Fancy06
11.772480633E12 02/03/2026
Has a musty odor
I really wanted to like this but the odor seems to be spoiled after opening.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center 02/03/2026
Thank you for your interest in Kérastase. We are sincerely sorry to hear that the fragrance of your product did not meet our high standards of luxury and freshness upon opening. At Kérastase, we pride ourselves on a premium sensory experience, and we would like to look into this for you to ensure you receive the quality you deserve. Please reach out to our experts at 1-877-254-9949 (M-F 9:00 AM – 5:30 PM EST) so we can assist you with a resolution and help you find a ritual you truly love.
Gallus
51.772460917E12 02/03/2026
Woohoo thicker hair
[This review was collected as part of a promotion.] Having fine hair and aging sucks, but started using this and my hairdresser was amazed with the difference in my hair thickness
Originaly posted on kerastase-usa.com
Chief4jo
51.771979405E12 24/02/2026
No tangles less shedding
[This review was collected as part of a promotion.] Helps with shedding hair due to stress. Hair is soft and tangle free. Feels fuller.
Originaly posted on kerastase-usa.com
Terisa
51.771813809E12 22/02/2026
Have used this for years
[This review was collected as part of a promotion.] Have been using this for years. & I love this product! It leaves my hair so beautiful and healthy. And it doesn’t take much at all. I highly recommend this product!
Originaly posted on kerastase-usa.com
TraceyC
51.771830009E12 23/02/2026
Amazing!
Love this product! Gives my hair a ton of volume while also keeping it smooth and shiny! I would highly recommend!
Originaly posted on kerastase-usa.com
Skygge
51.771765213E12 22/02/2026
Good! Very good!
[This review was collected as part of a promotion.] Good! Very good! Smells good! Feels good during shower. Noticeable less hair breakage and/or loss post shower/bath. Hair smelled good all day to next day. Hair feels and looks good entire day and night— noticeably less frizzy.
Originaly posted on kerastase-usa.com
Emma Baker
51.771794008E12 22/02/2026
Get it!
Smells amazing and helps with volume without weighing down hair too much. I have thick, wavy, medium porosity hair and it works for me.
Originaly posted on kerastase-usa.com
mbeckrn
51.771516816E12 19/02/2026
Great product
[This review was collected as part of a promotion.] Love this conditioner! Just the right amount of conditioner without leaving it oily.
Originaly posted on kerastase-usa.com
Skinny
21.77161978E12 20/02/2026
Not Great
No great. Made my hair feel weight ed down. Felt like I couldn’t get it off.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center 20/02/2026
We are truly concerned to hear that the product felt impossible to rinse away, as a heavy, "un-rinsable" sensation is often the result of a "diagnosis mismatch" with our most intensive, lipid-rich formulas. When a range like Nutritive or Chronologiste—designed for extreme replenishment—is applied to hair that isn't porous enough to absorb it, the nutrients can sit on the surface, creating that weighted, product-laden feeling. To resolve this, we recommend our "Double Bain" technique: use a very small amount for the first wash to break down oils, and a second to deeply cleanse the fiber, followed by a full sixty-second rinse with lukewarm water. By shifting your ritual to a lighter range like Specifique or Volumifique, and ensuring that any Fondant or Masque is strictly limited to your mid-lengths and ends, we are confident we can restore the airy, weightless suppleness that defines the Kérastase experience.
Cynthia29
51.771404311E12 18/02/2026
Highly recommended
[This review was collected as part of a promotion.] I love this product my hair looks smooth all the time
Originaly posted on kerastase-usa.com
Health
51.771252215E12 16/02/2026
Great thickening conditioner
[This review was collected as part of a promotion.] Love this conditioner. Stepped out of shower with thicker feeling hair
Originaly posted on kerastase-usa.com
Nicole S18
51.771048809E12 14/02/2026
Love! Definitely a staple product!
[This review was collected as part of a promotion.] Feels great, smells great! My hair feels smooth and looks shiny.
Originaly posted on kerastase-usa.com
Em8228
51.770994813E12 13/02/2026
Soft & Clean
Sensitive to too heavy and this was not. Left hair feeling soft and clean.
Originaly posted on kerastase-usa.com
LMac
41.770927569E12 12/02/2026
Nice conditioner for fine hair
I like the fragrance and the conditioner doesn't weigh my hair down or make it feel flat. Keeps lots of body in the hair.
Originaly posted on kerastase.ca
Oliviah
51.770930913E12 12/02/2026
Kate GB
51.770879608E12 12/02/2026
A conditioner that feels light on my hair!
Nourishing, but not too heavy for my super fine hair.
Originaly posted on kerastase-usa.com
ambi007
51.77066091E12 09/02/2026
I have been using Kérastase for years
Kerastase products are amazing and leaves my hair shiny and healthy every time.
Originaly posted on kerastase-usa.com
Maria Costa
51.770508808E12 07/02/2026
Great product
I've been using this conditioner everyday for years, and love how my fine hair is left airy and smooth.
Originaly posted on kerastase-usa.com
Ot2333
51.770482712E12 07/02/2026
Love this product
Awesome product, have really noticed a difference since started using it
Originaly posted on kerastase-usa.com
Diana M
51.770583509E12 08/02/2026
Excellent!
This conditioner used with the complementary shampoo helped my hair grow in thicker. It wasn't instant growth but continued use that made the difference.
Originaly posted on kerastase-usa.com
Adriana88
51.770417909E12 06/02/2026
FAVORITE
I love the luxurious feel of this product and how great it has worked for me.
Originaly posted on kerastase-usa.com
Michmck
51.770391817E12 06/02/2026
Excellent conditioner for fine hair
[This review was collected as part of a promotion.] I’ve been using this conditioner for years now. It’s the perfect weight conditioning my thin and baby fine hair. I cannot recommend it enough.
Originaly posted on kerastase-usa.com
beaglemom
51.770473713E12 07/02/2026
Great Partner to the Shampoo
Helps thicken my hair without feeling heavy. My hair also feels very soft and easily manageable.
Originaly posted on kerastase-usa.com
Holmes
51.770263106E12 04/02/2026
This works!
Makes hair feel thicker and with more volume. My hair holds more body for longer.
Originaly posted on kerastase-usa.com
Odessa
51.770055211E12 02/02/2026
Lightweight Conditioner That Boosts Fullness & Sof
Lightweight yet nourishing, this conditioner leaves hair feeling softer, fuller, and healthier without weighing it down. Perfect for adding body and density, especially to fine or thinning hair.
Originaly posted on kerastase-usa.com
Mkitty
51.769722206E12 29/01/2026
This made a great gift!
[This review was collected as part of a promotion.] I purchased this and the conditioner as a gift. It was geat, and she loves the products I picked out for her.
Originaly posted on kerastase-usa.com
Daniivry
51.769597112E12 28/01/2026
Densifique Fondant Densité Conditioner
Overall this is a great product, recently I’ve been struggling with my hair thinning and this product has made my hair feel alive again
Originaly posted on kerastase-usa.com
zakkiel
51.769549414E12 27/01/2026
Amazing shine and softness after one wash
[This review was collected as part of a promotion.] I’ve been using this shampoo for about two weeks, and I’m honestly very impressed. It cleans my hair well without making it feel dry or heavy, and my hair feels noticeably softer and smoother after every wash.
Originaly posted on kerastase-usa.com
Gaylen
51.769528713E12 27/01/2026
Found it!
[This review was collected as part of a promotion.] My thinning aging hair loves this , feels like it used to!
Originaly posted on kerastase-usa.com
Noname1983
31.769528239E12 27/01/2026
Too much fragrance
This does volumize, but it doesn't provide enough moisture, so I have to alternate it with other products. The fragrance on this and the shampoo is so strong, it fills the entire floor of my house when I use it, and I can smell it until the next day. I usually use natural products but thought I'd try this for scalp issues. Will not repurchase, the strength of the smell is sickening. I'd always thought of Kerastase as a luxury product, so I wish they'd use higher quality ingredients than overpowering artificial fragrance.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center 27/01/2026
Thank you for your feedback. At Kérastase, we aim to create a holistic sensory experience, and we are sincerely sorry that the fragrance of this collection was overwhelming for you. While our volumizing formulas are meticulously engineered for weightless lift, we understand they may not provide the intense hydration your hair requires, and we appreciate your perspective on the balance between professional performance and scent intensity. We value your honesty as it helps us refine our luxury rituals, and should you wish to find a more subtle, moisture-rich alternative, our Haircare Métier Companion in the Explore page is available to assist you in curating a bespoke ritual that better suits your preferences. Thank you for your feedback. At Kérastase, we aim to create a holistic sensory experience, and we are sincerely sorry that the fragrance of this collection was overwhelming for you. While our volumizing formulas are meticulously engineered for weightless lift, we understand they may not provide the intense hydration your hair requires, and we appreciate your perspective on the balance between professional performance and scent intensity. We value your honesty as it helps us refine our luxury rituals, and should you wish to find a more subtle, moisture-rich alternative, our Haircare Métier Companion in the Explore page is available to assist you in curating a bespoke ritual that better suits your preferences.
claire1308
51.769470208E12 26/01/2026
Nice hair treatment
[This review was collected as part of a promotion.] My hair feels really soft using this serum. Really luscious consistency and nice fragrance.
Originaly posted on kerastase-usa.com
mdmodie
31.769526714E12 27/01/2026
doesn't detangle
[This review was collected as part of a promotion.] I had high hopes for this cream rinse but after toweling dry I still need to use a spray/leave in detangler. It doesn't seem to help with volume either.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center 27/01/2026
Thank you so much for your feedback. At Kérastase, we aim for every ritual to be a moment of total transformation, and we are sorry to hear that this product did not meet your expectations for volume and manageability. In hair science, balancing weightless volume with effortless detangling is a delicate task. Often, volumizing formulas are designed to be extremely light to ensure lift, which means hair that is prone to tangling may require a secondary "Priming" step to perfectly smooth the fiber.
Sun Lar
31.769463187E12 26/01/2026
Quality and Moisture
[This review was collected as part of a promotion.] I did not find this product to be too moisturizing and it hard to tell if my hair is getting the thickness and care as some have said.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center 26/01/2026
That is very honest and helpful feedback. It sounds like the Genesis Bain Hydra-Fortifiant might be leaning a bit too much into the 'detox' side for your hair type, especially with your highlights. While it’s designed to strengthen the hair fiber to prevent shedding, it doesn’t provide that immediate 'cushiony' moisture or thickness that many people expect from a repair line. Since highlighted straight hair can often feel a bit brittle or flat, you likely need a product that focuses more on 'plumping' the fiber—like the Blond Absolu range—or the Genesis Nutri-Fortifiant version, which offers a much creamier, more moisturizing finish while still addressing hair fall.
MelodyNY
51.76929197E12 24/01/2026
Amazing
My mother actually purchased the conditioner for me and I was obsessed. I love everything about it… the scent, the way my hair felt and looked. Thank you Kerastase!
Originaly posted on kerastase-usa.com
Dixie63
51.768950908E12 20/01/2026
Best product for Grey, color-treated hair
[This review was collected as part of a promotion.] My hair colorist is amazed at how well my hair holds color! Especially having gray hair and I get a red color applied. This conditioner leaves my hair looking healthy. She asked me to write down the product I use.
Originaly posted on kerastase-usa.com
KNC8721
11.769020554E12 21/01/2026
Terrible packaging
The bottle is falling apart and so it’s hard to work with the product itself
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center 21/01/2026
We are so sorry to hear that the packaging is falling apart! We know how frustrating it is when the bottle makes it difficult to use the product you love. We want to make this right for you—please call us at 1-877-254-9949 so we can look into a replacement and share this with our packaging team.
MikeWill
51.768605306E12 16/01/2026
Awesome for thin hair
My hair has always been thin since I was younger. Using this helps to get more volume and makes the hair on my head feel better than ever. I'm glad I was recommended this by a hair stylist and would recommend it for anyone!
Originaly posted on kerastase-usa.com
Tara B
51.768238117E12 12/01/2026
Hair Feels Thicker
Of all the products I've tried THIS product smells clean & makes my hair feel thicker than it is!
Originaly posted on kerastase-usa.com
Chris GF
51.767968128E12 09/01/2026
Soothie the hair
[This review was collected as part of a promotion.] I felt a overall difference in my hair, less friz, less fall and you can comb your with your fingers while applying it.
Originaly posted on kerastase-usa.com
meganbp
51.767825011E12 07/01/2026
Great conditioner!
This conditioner has helped my hair feel thicker and I love the smell. Will definitely buy again.
Originaly posted on kerastase-usa.com
Bhalbgew
51.767807922E12 07/01/2026
Awesome
[This review was collected as part of a promotion.] This is my all time favorite line. I get worried when I start running low. I can use often and it does not seem to build up or weigh down my hair.
Originaly posted on kerastase-usa.com
Sanibel
51.767758406E12 06/01/2026
Love it!
I love it, as it does not make my hair feel heavy or greasy. I like the scent.
Originaly posted on kerastase-usa.com
ShellyBelly
51.767722416E12 06/01/2026
Excellent product!
[This review was collected as part of a promotion.] Leaves my hair so silky and beautiful. Really hydrates it!
Originaly posted on kerastase-usa.com
Maysineriz
51.76783221E12 07/01/2026
Loved
The shampoo and it made my hair so fragrant and soft that I just became obsessed. The line promises what it says
Originaly posted on kerastase-usa.com
SpilTea
11.768065418E12 10/01/2026
Who has the time!
Not a in shower conditioner. The instruction want you to towel dry hair and the apply to then again rinse out your hair. I don’t notice any difference even after the extra time it takes to apply properly.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center 10/01/2026
Hello, thank you for your honest feedback. We completely understand that the extra step of towel-drying can feel like a lot of effort in a busy routine! The reason our instructions recommend towel-drying is because hair acts like a sponge. When it is completely saturated with water, it cannot absorb the concentrated active ingredients in the mask, causing the product to simply sit on the surface and rinse away. By removing excess water, you allow the formula to penetrate deeply into the hair fiber to provide the 'discipline' and nourishment it’s designed for. We’re sorry to hear that even with the extra effort, you didn't see the results you were looking for. If you prefer a faster routine, we would love to recommend one of our 'Fondants' (conditioners), which are designed for quick application on wet hair while still providing that signature Kérastase finish.
DeborahJP
51.767672904E12 05/01/2026
Densifique Fondant Densite Conditioner
Amazing product and I LOVE as much as Densifique Shampoo. Perfect combination for perfect results. This moisturizer is light and plumps the hair. My hair comb glides through my hair. !!!!! Always great compliments on my hair !!
Originaly posted on kerastase-usa.com
JPinAZ
51.767403809E12 02/01/2026
Great conditioner for 50+ hair!!
This is my favorite conditioner. I love how my hair feels and styles!
Originaly posted on kerastase-usa.com
natulya07
51.767295812E12 01/01/2026
Densifying Conditioner
Love this whole line, makes my hair more dense and more volume looking. Been buying this on repeat along with shampoo
Originaly posted on kerastase-usa.com
Elena3
51.767204013E12 31/12/2025
Love Densifique
[This review was collected as part of a promotion.] This conditioner is so rich and leaves my hair really soft and smells great.
Originaly posted on kerastase-usa.com
Lindsey K
51.767074407E12 30/12/2025
BEST conditioner!
[This review was collected as part of a promotion.] My hair has become noticeably healthier since begining to use this product. This conditioner is light, and doesn't leave my hair feeling heavy or filmy after washing. It also smells great.
Originaly posted on kerastase-usa.com
Jesicat
51.767046511E12 29/12/2025
Great for fine hair
Great for fine hair! Changes the texture, soft and styles well
Originaly posted on kerastase-usa.com
Anonymous
11.76711768E12 30/12/2025
Too thick and weighs down hair.
Too Thick and weighs hair down. This product is not worth the money. Also does not smell as good. For side will not purchase again
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center 30/12/2025
I completely understand your frustration; it's truly disappointing when a product, especially one we've invested in like the Kérastase mask, not only fails to deliver results for damaged hair but also introduces new issues like being too thick, weighing our hair down, and even having an unpleasant scent. The experience of a product feeling too heavy is a common concern for fine, thin hair, as richer formulations can easily overwhelm delicate strands. Given your insights, we could explore why some products weigh down fine hair and what characteristics or application techniques are better suited for your hair type to help you find more effective solutions in the future.
KiminOC
41.766959207E12 28/12/2025
So far so good
[This review was collected as part of a promotion.] Just started using but notice it’s making my hair feel thicker.
Originaly posted on kerastase-usa.com
Fondant Densité Conditioner 200ml
Kerastase - Densifique
Conditioner for fine and thinning hair. It provides additional texture, substance and resilience to the hair, making it fuller and thicker.
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1 (877) 625-4735 