Back
Genesis is the first dual action anti-fall haircare range: FOR ALL WOMEN, IN ALL LIFESTYLES, WITH ALL DEGREE OF HAIR FALL.
Powered with a cocktail of highly efficient ingredients to instantly strengthen and thicken the hair fiber for an immediate fuller look with more fiber strength, more fiber retention* and -84% less hair-fall**.
*Clinical study, 99 people, 6 weeks use.
**hair-fall due to breakage. Instrumental test on Bain Nutri-fortifiant + Masque Reconstituant + Ampoule/Sérum Aminexil.
HOW DOES GENESIS WORK?
A double action for your client:
Instantly: PROTECTS AGAINST DAILY EXTERNAL AGGRESSOR AND ANTIOXIDES thanks to Ginger roots and Edelweiss native cells.
Long Term: STOP HAIR-FALL FORTIFIES HAIR ANCHORAGE & RETENTION AND REDUCE HAIR-FALL FROM THE ROOTS thanks to Aminexil.
Défense Thermique benefits:
- Detangles and hydrates without frizz.
- 24H protection against frizz even in high conditions of humidity.
- Protects hair from blow-dry heat.
- Helps to prevent split ends.
- Leaves hair shiny and silky.
- 99% less hair fall due to breakage from brushing*.
- 49% softer hair*.
*After application of Défense Thermique.
WHO IS IT FOR?
Genesis targets every woman with hair fall need that would be efficient, convenient and pleasurable with :
- Instant result of hair care
- Efficacy of anti-hair fall solutions
Prime with the Défense Thermique :
Step 1: Apply on wet lengths.
Step 2: Blow dry.
In case of contact with eyes, rinse them immediately and thoroughly.
Learn more on Access
Ask more information about this productGenesis Défense Thermique is enriched with GINGER ROOT and EDELWEISS NATIVE CELLS.
GINGER ROOTS: Known for its ability to protect against daily external aggressors.
EDELWEISS NATIVE CELLS: Capable to resist the most extreme conditions and is known in skincare for its antioxidants. It also has power & collagen-preserving properties.
INGREDIENTS
AQUA / WATER / EAU • COCOS NUCIFERA OIL / COCONUT OIL • AMODIMETHICONE • POLYQUATERNIUM-37 • PHENOXYETHANOL • PROPYLENE GLYCOL DICAPRYLATE/DICAPRATE • XYLITYLGLUCOSIDE • SODIUM HYDROXIDE • ANHYDROXYLITOL • XYLITOL • DIMETHICONE PEG-7 PHOSPHATE • PPG-1 TRIDECETH-6 • TRIDECETH-6 • BEHENTRIMONIUM CHLORIDE • LIMONENE • XYLOSE • ETHYLHEXYLGLYCERIN • SORBITAN OLEATE • LINALOOL • ISOPROPYL ALCOHOL • CETRIMONIUM CHLORIDE • GLYCERIN • HYDROLYZED VEGETABLE PROTEIN PG-PROPYL SILANETRIOL • BENZYL SALICYLATE • COUMARIN • ZINGIBER OFFICINALE ROOT EXTRACT / GINGER ROOT EXTRACT • CITRAL • BENZYL ALCOHOL • CITRONELLOL • BENZYL BENZOATE • LEONTOPODIUM ALPINUM CALLUS CULTURE EXTRACT • POTASSIUM SORBATE • TOCOPHEROL • CITRIC ACID • XANTHAN GUM • DIPEPTIDE DIAMINOBUTYROYL BENZYLAMIDE DIACETATE • PARFUM / FRAGRANCE
Rating & Reviews
nellyinnewburg_2524
51.75478402E12 09/08/2025
Good product!
[This review was collected as part of a promotion.] I used this before blow drying my hair and it did not disappoint, nor did it make my hair heavy. Smells nice and pretty bottle also! It’s a little thicker coming out of the bottle when you spray it but it’s not weighing my hair down after the blow drying.
Originaly posted on influenster.com
maureenc39_6652
31.754941212E12 11/08/2025
Decent but you can do better for the $$$
[This review was collected as part of a promotion.] So this was fine but given how expensive this brand is, I feel customers can do better at cheaper prices. I only used this prior to blow drying and then flat ironing and this pic is the result (plus a serum on the ends). I normally use a cheaper spray from L’ange and I much prefer that over this.
Originaly posted on influenster.com
Reply from Consumer Care Center
Hi maureenc39_6652. We appreciate you taking the time to reach out and provide feedback on Genesis Defense Thermique Heat Protecting Spray. We are sorry to hear that it did not exceed your expectations. Consumer feedback is valuable to us and we will be sure to pass all of your comments along. We hope that you will continue trying more of our products soon with greater satisfaction in the results.
Hill08
51.754760609E12 09/08/2025
Heat protection
Really good protects my hair from my iron recommend it 100%
Originaly posted on kerastase-usa.com
jamieg2_7885
41.754800208E12 10/08/2025
Good product
[This review was collected as part of a promotion.] I think this is a good heat protector spray. I enjoy the scent it subtle. My hair feels soft and shiny. The product itself is a thicker consistency so I sprayed in my hands and then applied.
Originaly posted on influenster.com
soulam106_7216
51.754800208E12 10/08/2025
Absolutely amazing
[This review was collected as part of a promotion.] This product is absolutely amazing! I have used a ton of heat protecting sprays and this is by far one of the best. I have super long thick curly hair and this protects it from heat damage and leaves my hair super soft.
Originaly posted on influenster.com
vanessad522_8514
51.754718309E12 09/08/2025
Worth the money
[This review was collected as part of a promotion.] Omggg i loveeee this for my hair it makes it feel so good. The Scent on it is light but smells good. I love how the packaging shows the product lets me know when it’s going to be done.
Originaly posted on influenster.com
monicas592_6787
51.754718309E12 09/08/2025
Amazing hair treatment!
[This review was collected as part of a promotion.] Great product! It gets its job done and makes my hair smooth, soft, and less frizzy, detangles and protects hair from heat!
I have thick, long hair and wash it every 2 days and I use ~4 sprays, so you don't need that much product to already see a great result. I also lovvve the smell!
I highly recommend it!
Originaly posted on influenster.com
olga_ok_2388
51.754693116E12 08/08/2025
My fine hair loves it
[This review was collected as part of a promotion.] The product has a subtle, high-end scent reminiscent of one of the green Gucci Flora fragrances. I catch pleasant whiffs of it throughout the day, adding a touch of luxury to my haircare routine.
This product performs exceptionally well for my fine, wavy, and frizz-prone hair. After applying it to wet hair and blow-drying, it kept my hair sleek and straight until the next wash, even through humid conditions. It doesn’t weigh down my fine hair or leave it greasy. Instead, my hair feels well-conditioned, elastic, and has a healthy weight without looking like stiff icicles.
Originaly posted on influenster.com
alejandram466_1165
51.754693116E12 08/08/2025
The best heat protecting spray!
[This review was collected as part of a promotion.] I am obsessed with this heat protecting spray! I used it before blow drying and curling my hair and my hair feels so soft. Not only that, but it smells so good! It is very easy to apply and the size of the bottle is great.
Originaly posted on influenster.com
oneinamillie_5819
41.754706629E12 08/08/2025
Really enjoyed using this
[This review was collected as part of a promotion.] The product is great let’s get that out of the way. I have thick curly hair with a mixture of thick and thin strands.
It’s definitely a moisturizing heat protectant, it leaves hair soft and manageable after use.
However! The spray mechanism is dreadful! Because of the consistency of the product, the manufacturers should have opted for a different sprayer all together. It’s hard to get the product out or the bottle to spray the product out evenly/ consistently.
It’s hard to even press the spray pump, with one hand while trying to move it around. The product is also very heavily scented, I didn’t mind the scent but might be too heavy for sensitive noses.
Lastly, the product itself is heavy and may not be best for people with thinner strands.
Originaly posted on influenster.com
Anonymous
51.754683212E12 08/08/2025
Smells delicious and protects weakened hair
[This review was collected as part of a promotion.] In the early 2000s when flat irons and other heat styling tools were used practically every day my hair was in embarrassingly poor condition. That kept me away from any heat styling tools until very recent years, when products to protect hair from the effects of this type of tool came into vogue. Not all of them that I have tried are great, but this one really impressed me.. Firstly, it’s non-sticky. Also, I love the scent. But most importantly it’s made specifically for hair that is weakened, such as my highlighted tresses. It works very well and I will continue to buy it. Now I’m not afraid to blow dry, so I have more styling options beyond just letting my hair air dry.
Originaly posted on influenster.com
monikamonia_5962
51.754683212E12 08/08/2025
A good heat protector for damaged hair.
[This review was collected as part of a promotion.] I always look for the next best. Being a bleach blonde, I need a good heat protector. This is it! It's light weight but very effective. Hair feels smooth after use. Light scent. I don't have to use as much as others to get the same coverage. It doesn't weight my hair down either. The packaging is nice and gives just enough amount. Highly recommend!
Originaly posted on influenster.com
sasha96_3155
51.754660725E12 08/08/2025
Heat Protection Without Heavy Product Feel
[This review was collected as part of a promotion.] I’m not usually one to bother with heat protectants and that always made me feel guilty. Most heat protectants feel heavy, sticky, or make my hair fall flat. This one is different. It’s super lightweight and somehow hydrates my hair and still leaves it bouncy. I LOVE the smell, and after a blowout my hair looks smoother with a nice, natural shine. It’s not cheap, but it actually does what I’ve always wanted a heat protectant to do. You get the best of the best.
Originaly posted on influenster.com
cristas6_5645
51.754660725E12 08/08/2025
Excellent For My Blonde Fine Hair
[This review was collected as part of a promotion.] In typical Kérastase style, this is a win. I have fine blonde hair that is quite fragile and this is amazing for blow drying. It smells fresh without being overpowering and a little goes a long way. I use it with the Genesis conditioner as well.
Originaly posted on influenster.com
laurenm1280_4355
41.754604009E12 07/08/2025
Great scent and effective for heat protection
[This review was collected as part of a promotion.] Smells great, bottle is sleek, the spray is nice, the scent is FANTASTIC, it did a good job at coating my hair and protecting it, there is a slight stickiness to my hair.
Originaly posted on influenster.com
Jan thin hair
51.754604009E12 07/08/2025
Works well
Works well with my hair. It’s thin. Feels great after drying
Originaly posted on kerastase-usa.com
helen1118_5470
51.754577908E12 07/08/2025
This product is essential for anyone wanting to st
[This review was collected as part of a promotion.] Kérastase Genesis Défense Thermique is a fantastic heat protectant that makes my hair soft and smooth. Its lightweight texture keeps my fine hair feeling free and never weighed down. The fresh, luxurious scent reminds me of a high-end salon. Since using it, I've noticed less hair breakage and fewer strands falling out when brushing. It simplifies blow-drying and adds brilliant shine while protecting against heat up to 220°C. My ends look healthier and less frizzy. It absorbs quickly without any greasy residue, and there's no rinse step required. This product is essential for anyone wanting to strengthen fragile hair.
Originaly posted on influenster.com
n31785_5176
51.754579708E12 07/08/2025
Would recommend for effectiveness
[This review was collected as part of a promotion.] Wow, I am impressed by how well this takes frizz without being too hard or oily. It’s compact and has simple pink spray packaging. The ingredients are not overly natural but very much do the job. The scent is pleasant.
Originaly posted on influenster.com
mamab4sb_7393
51.754577908E12 07/08/2025
Smells light
[This review was collected as part of a promotion.] I received this today for free in exchange for my honest review here on Influenster. This worked so well detangling my kindergartners wavy hair. I wanted to use it on her since she has tons of frizz. It did well taming the frizz, smelled great, and left her hair looking more smooth. We will continue to use this one.
Originaly posted on influenster.com
cassiew80_4134
51.754532023E12 06/08/2025
Soft & Shiny Hair!
[This review was collected as part of a promotion.] This Kerastase heat protection spray is a 10/10! After I blow dry and straighten my bleached hair, this product leaves my hair feeling super soft and a wonderful shine. It smells amazing too!
Originaly posted on influenster.com
watermelonlover_1777
51.754520304E12 06/08/2025
I love it!
[This review was collected as part of a promotion.] It smells very good and has nice sleek packaging. I say it is so effective that it is absolutely worth the price. Also no bad damaging ingredients like other heat protectants have.
Originaly posted on influenster.com
alexabrookea_8383
51.754532023E12 06/08/2025
Lightweight and controls frizz
[This review was collected as part of a promotion.] This is a lightweight, heat-protectant spray that leaves hair smooth, shiny, and less prone to breakage. Helps control frizz—perfect for daily styling!
Originaly posted on influenster.com
lorieg2_5271
51.754539205E12 07/08/2025
Love it! 💕
[This review was collected as part of a promotion.] This heat protecting spray left my hair feeling so hydrated and shiny! Love the fragrance! Does not leave hair feeling sticky or yucky! Also does not cause extra drying time which is great! This will definitely be a new addition to my blowdrying routine!
Originaly posted on influenster.com
meggiej3_5406
51.754520304E12 06/08/2025
Beautiful!
[This review was collected as part of a promotion.] Beautiful packaging! I was so excited to receive this. I have not personally tried anything from this brand, but I am loving this product. It seems like it will go a long way for how little I have to use in my hair.
Originaly posted on influenster.com
Lauraelisaar
41.754496908E12 06/08/2025
Great
Pretty great, does what is supposed to do, my hair feels healthier since I started using it.
Originaly posted on kerastase-usa.com
mollies55_9697
51.754451904E12 05/08/2025
Love
[This review was collected as part of a promotion.] Absolutely love this heat protectant! The Kérastase Genesis Défense Thermique leaves my hair feeling soft, smooth, and protected without weighing it down. It smells amazing and helps reduce breakage from heat styling. My hair feels stronger and healthier with every use. Definitely a must-have in my haircare routine!
Originaly posted on influenster.com
tany0917
41.75442401E12 05/08/2025
GOOD!!
I just started using this product everytime i blow out my hair and it smells so so good and it realy protects my hair from the heat
Originaly posted on kerastase-usa.com
BellaRoo
51.754418614E12 05/08/2025
3rd bottle
This is my 3rd bottle and will not be without this product.
Originaly posted on kerastase-usa.com
rachellew0793_4964
51.754397912E12 05/08/2025
Smells amazing!
[This review was collected as part of a promotion.] I absolutely love the smell of this leave in treatment. I feel like my hair was shinier and it controlled my frizz. I always use a heat protectant to prevent damage and this might be my new favorite.
Originaly posted on influenster.com
FeniKM
51.75422871E12 03/08/2025
Best Smelling Product Line
This is my absolute favorite hair care line from Kerastase! The smell is amazing and it makes my hair feel so thick.
Originaly posted on kerastase-usa.com
Linn1329
51.753802112E12 29/07/2025
My new favorite
Not only does the product condition my hair, it does so without lasting heaviness or greasiness. It provides great heat protection and don’t even get me started on the smell. I love to layer with the genesis shampoo for added benefit. Love! Love! Love!
Originaly posted on kerastase-usa.com
Terrific
51.753728309E12 28/07/2025
Love this product!
[This review was collected as part of a promotion.] Purchasing for the second time. I highly recommend.
Originaly posted on kerastase-usa.com
Aviola
51.753715711E12 28/07/2025
The best Thermique
[This review was collected as part of a promotion.] Leaves silky hair🥰 I love this product and the hair mask too
Originaly posted on kerastase-usa.com
Bostongurl
51.753594229E12 27/07/2025
Seems to work
I think it works. It doesn’t make my hair feel gross or weighted down.
Originaly posted on kerastase-usa.com
Smith21
51.753627509E12 27/07/2025
Love this thermal spray.
It really helps protect my hair when I'm using a flat iron
Originaly posted on kerastase-usa.com
Jen Nish
51.753469105E12 25/07/2025
Awesome product!
Awesome product, Kerastase is the best! I love how nourished this makes my thin hair feel without weighing it down.
Originaly posted on kerastase-usa.com
Ranran
51.753384508E12 24/07/2025
Great product
Recommended to everyone, it makes my hair feel great after use. When I flat iron my hair and use this my hair feels soooo soft
Originaly posted on kerastase-usa.com
Lady Kora
51.75319821E12 22/07/2025
Perfect for me!
I absolutely love how this product makes my hair feel. And the smell is to die for.
Originaly posted on kerastase-usa.com
Sandy Verhault
51.752779712E12 17/07/2025
Sandy V.
LOVE LOVE LOVE this amazing product. This is a total game changer for my hair.
Originaly posted on kerastase-usa.com
Latina94
51.752779712E12 17/07/2025
Love it!
[This review was collected as part of a promotion.] I really love the texture of my hair every time I blow it out!!!
Originaly posted on kerastase-usa.com
Marie2928
51.752700509E12 16/07/2025
Genesis
[This review was collected as part of a promotion.] The best thermique heat protecting! In love with kerastase.
Originaly posted on kerastase-usa.com
KenzieT
31.753286305E12 23/07/2025
Protection Without the Crunch
[This review was collected as part of a promotion.] This is my go-to before blow-drying or using hot tools. It adds a silky finish while protecting against heat damage, which is key for keeping my blonde hair from becoming brittle. No stickiness or residue—just soft, protected strands.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi there! Thank you for reaching out about our Genesis Defense Thermique Heat Protecting Spray. We're thrilled to hear that our product is your go-to for heat styling! We're delighted it provides that silky finish and essential heat protection, especially for your blonde hair, without any stickiness or residue. Thank you for trusting us to keep your strands soft and protected!
Anna31
51.752618604E12 15/07/2025
Olor y densidad
Me gusta el olor y la densidad de este producto, mi pelo queda suave
Originaly posted on kerastase-usa.com
Bbbriiiii
51.752611407E12 15/07/2025
Perfect
Love the product smooth and shines your hair and not freeze
Originaly posted on kerastase-usa.com
Vicki C
51.752605112E12 15/07/2025
Huge difference!
This has made a huge difference in my hair. Doesn’t weigh it down even though I have fine hair. Won’t go without it!
Originaly posted on kerastase-usa.com
Rajae
41.752588291E12 15/07/2025
Protective but Still frizzy
I chose this product bc it supposed to be "an all in one" so i don't over do it with extra products, yes it is a heat protector but my hair is still frizzy after so i have to pair it with an other spray or oil to have the effect i want; Still i like the smell and it being light wight
Originaly posted on kerastase.ca
Candy1953
51.752535806E12 14/07/2025
Holy Shine!
This makes my hair so shiny and smooth. My hair has never felt this good.
Originaly posted on kerastase-usa.com
Justownit
51.752347705E12 12/07/2025
My hair is protected
I don’t blow dry my hair everyday, but this is essential for days when I blow dry my hair!
Originaly posted on kerastase-usa.com
Martha GM
21.752780993E12 17/07/2025
Its ok
It has a pleasant scent, but super strong. I HATED how it’s actually sprayed because it goes in 2 strong directions and there is no way to adjust this.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi there, Thanks for your feedback on Genesis Defense Thermique Heat Protecting Spray. We're so sorry to hear about your experience and would like to collect more information. Please give us a call at 877-748-8357 Monday to Friday: 9:00 am to 5:30 pm. EST and provide case #41921942. We look forward to speaking with you.
Auntie
51.751985908E12 08/07/2025
Perfect for thin hair
This has an amazing smell and conditions hair wonderfully
Originaly posted on kerastase-usa.com
Anonymous
51.751850905E12 06/07/2025
ANOTHER AWESOME PRODUCT!
I love this! Does everything it says it will! Another great product!
Originaly posted on kerastase-usa.com
Ashley97
51.751786106E12 06/07/2025
Excellent product!
Love this product so much, I’ve been using it for the past month and is excellent.
Originaly posted on kerastase-usa.com
AmandaB11
51.751584507E12 03/07/2025
Amazing product!
This product is wonderful! Smells amazing, makes my hair silky smooth while styling. My overall texture has improved and my hair feels so good since starting to use this.
Originaly posted on kerastase-usa.com
JuliaG
51.751503526E12 02/07/2025
Don’t wait! Must buy product!
This product was recommended by my hairstylist and it has been a game changer! I am a natural blonde (with highlights 2x/year), and was Starting to see some breakage. I have been using this product for only 2 weeks but the change is incredible! Healthier looking/feeling hair. The product is not greasy, does not leave a film, does not weigh down my hair, and has a pleasant neutral smell.
Originaly posted on kerastase-usa.com
Kathryn W
51.751380209E12 01/07/2025
Best out of the shower product for hot styling
This is my favorite heat protectant/leave in conditioner I’ve ever used. It adds so much softness to my changing hair and the smell is divine.
Originaly posted on kerastase-usa.com
ReeseA
21.751399576E12 01/07/2025
Not for fine hair
It makes my fine hair very flat and too soft (it won’t even hold in a pony tail because of the softness). I’d like to try a different product next time, but at this price, I feel like I have to finish this one first.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi there, Thanks for your feedback on Genesis Defense Thermique Heat Protecting Spray. We're sorry to hear that it wasn't the right fit your your hair type and needs, hindering styling. Although not a heat protectant, we recommend Densifique Densimorphose which is a thickening hair mousse for finer hair types.
H Esma
51.751304608E12 30/06/2025
Recommended
I love the texture, it’s easy to use and help to style very easy.
Originaly posted on kerastase-usa.com
Larissalllll
41.751182208E12 29/06/2025
Annoying spray nozzle
I do like this product. Good heat protectant. Mild but pleasant smell. I deducted 1 star bc it’s an annoying spray cap. You have you push down hard and I have to use two hands sometimes to get the back of my head. I honestly might not purchase this again just bc it’s not an easy application.
Originaly posted on kerastase-usa.com
05bgrego
51.751297408E12 30/06/2025
Love it!
I love this product- my hair is so soft and shiny!!! Slightly afraid to let my daughter use it, I may not see it again!
Originaly posted on kerastase-usa.com
emmynyc
51.751026508E12 27/06/2025
Favorite New Addition To My Haircare Routine
[This review was collected as part of a promotion.] My hair feels and looks so much healthier after using this spray. I love the smell and how it doesn't leave a greasy/oily residue. Will definitely be buying again!
Originaly posted on kerastase-usa.com
Missy O
51.750219226E12 18/06/2025
Happy Customer
[This review was collected as part of a promotion.] This product has made such a difference with my hair from breakage using hot tools.
Originaly posted on kerastase-usa.com
Deborah E
51.750611137E12 22/06/2025
Oops, They Did it again!
Kérastase has done it again with the Genesis Défense Thermique Heat Protecting Spray—a must-have in any haircare routine, especially for those who style regularly with heat tools.
From the first use, I noticed a difference in the way my hair felt and looked. The spray is lightweight, non-greasy, and has a soft, luxurious scent that lingers without being overpowering. It applies evenly and doesn’t leave any sticky residue or buildup. Most importantly, it offers exceptional heat protection up to 450°F, which gives me peace of mind when blow drying, straightening, or curling.
What sets this product apart is its dual-action formula: it not only protects against heat damage but also strengthens hair that’s prone to breakage and fallout. Enriched with ginger root and edelweiss native cells, it nourishes the hair fiber and helps reduce breakage, making it perfect for weakened, thinning, or stressed hair.
After several weeks of use, my hair feels softer, stronger, and more resilient. I’ve noticed less shedding when brushing and a smoother finish after heat styling. It has quickly become a staple in my haircare regimen.
Pros:
Excellent heat protection (up to 450°F)
Lightweight and non-sticky
Strengthens and reduces breakage
Smells incredible
Adds smoothness and shine
Cons:
Slightly pricey, but worth it for the quality and performance
Overall, if you’re looking for a high-performance, salon-quality heat protectant that also strengthens and beautifies your hair, Kérastase Genesis Défense Thermique is well worth the investment.
Originaly posted on kerastase-usa.com
JNg841
51.750062607E12 16/06/2025
The best hair care products must have
I use this everyday after shower spray before blow dry my hair. Make my hair so smooth and smell so nice
Originaly posted on kerastase-usa.com
Hair101111
51.749836707E12 13/06/2025
Recommend!
Not oily and makes my hair so soft. The added heat protectant benefits is a huge plus too!
Originaly posted on kerastase-usa.com
Karen Elizabeth T
51.749814209E12 13/06/2025
Happy with Hair in New Jersey
Love how this smells and works on my hair. I use it every time I wash my hair and it really has made a difference in my hair texture. I wouldn't want to blow dry my hair without it!
Originaly posted on kerastase-usa.com
RedHeadIslandGirl
51.749514517E12 09/06/2025
Another Fabulous Kerastase Product
This was the first Kerastase Heat Protecting Spray and I Love it. I am trying various
products and I Love them all! Kerastase is just the most Outstanding Line of Products for your hair!!! Have you thought of adding makeup to your line as well?
Originaly posted on kerastase-usa.com
Jassybeth
51.749401113E12 08/06/2025
Product
[This review was collected as part of a promotion.] I’ve been using this hair product for a few weeks now, and I’m impressed! It leaves my hair feeling soft, smooth, and manageable without weighing it down.
Originaly posted on kerastase-usa.com
Herns1
51.749173403E12 05/06/2025
Oh how wonderful it smells!
[This review was collected as part of a promotion.] I get so many compliments on how my hair smells when I use this product. Definitely does the job of protecting my hair from heat
Originaly posted on kerastase-usa.com
alarimore
51.749241805E12 06/06/2025
Love this product
[This review was collected as part of a promotion.] Love this and smells so good! I even use it on my sons hair.
Originaly posted on kerastase-usa.com
DarleneO
51.749090603E12 04/06/2025
Shine
[This review was collected as part of a promotion.] Love the shine, my hair was dull, not anymore. I have received compliments on how healthy it looks
Originaly posted on kerastase-usa.com
JPG3334
51.749072605E12 04/06/2025
Left my hair feeling silky soft
Love the smell of this product and how it did not leave my hair weighed down.
Originaly posted on kerastase-usa.com
Letycia526
51.749137424E12 05/06/2025
Great product!
[This review was collected as part of a promotion.] I love this sorry and I religiously use it as a deranged after I wash my hair! It leaves my hair so soft and silky smooth! This is one product I will be repurchasing over and over again!
Originaly posted on kerastase-usa.com
Jhajaira
51.749051012E12 04/06/2025
Detangling and smooth feeling
I love the smell and freshness plus protective layer to my hair it does leave on it.
Originaly posted on kerastase-usa.com
Greenbean123
51.748924107E12 03/06/2025
True heat protectant
[This review was collected as part of a promotion.] Although I don’t use blow dryers or styling tools often, this spray is a miracle when I do. Less split ends and near to no frizz
Originaly posted on kerastase-usa.com
Sawyer44
51.748837704E12 02/06/2025
Wonderful
[This review was collected as part of a promotion.] Love this product. Makes my hair silky smooth and smells great
Originaly posted on kerastase-usa.com
McFuzz53
51.748807106E12 01/06/2025
Excellent product
[This review was collected as part of a promotion.] Absolutely love the smell. I have very course and frizzy hair and this product works wonders
Originaly posted on kerastase-usa.com
Stefanie77
51.748837704E12 02/06/2025
Lifesaver
This is such a lifesaver. It does it all! And the smell is amazing. I squirt about 10 sprays into my hand then blend it through.
Originaly posted on kerastase-usa.com
carsoni
51.748615414E12 30/05/2025
silky smooth product
The product works very well with calming frizzy hair!
Originaly posted on kerastase-usa.com
Brooks1231
51.748488507E12 28/05/2025
Soft weightless heat protection
[This review was collected as part of a promotion.] The smell is great and the I like how for the mist is. It lasts a long time and only a little product is needed. I’m not sure how well it worked to be honest, but I have faith in the brand that it does what says it’s going to do and protects my hair. I’ve already ordered a new bottle.
Originaly posted on kerastase-usa.com
Purpleheart
51.748488507E12 28/05/2025
Must have
Love this! It makes my hair smell so good! It's a must have!
Originaly posted on kerastase-usa.com
rinagrrl
51.748356208E12 27/05/2025
Great and Effective Product
[This review was collected as part of a promotion.] This product is very effective in preventing further damage to my hair (my hair is curly and I highlight it, so it is already damaged).
Originaly posted on kerastase-usa.com
millie123
51.747971005E12 22/05/2025
My Go-To!
This is my go to product for styling with a blow dryer. Speeds up drying and smells so good!
Originaly posted on kerastase-usa.com
Maria De Los Angeles
51.748007009E12 23/05/2025
Heat protectant, islander approved!
[This review was collected as part of a promotion.] Amazing heat protectant, and here in this island you get plenty of sun so you need to take care of it.
Originaly posted on kerastase-usa.com
Jiseth
51.747966502E12 22/05/2025
I loved this product
[This review was collected as part of a promotion.] It leaves my hair super soft.
I like to use it on damp hair after washing it, I also feel like it leaves my hair frizz-free.
Originaly posted on kerastase-usa.com
Julie N
51.747691106E12 19/05/2025
Genesis leave in conditioner and heat protector.
Love this product! The best for heat protection and de-tangling
Originaly posted on kerastase-usa.com
ngserpas
31.747759088E12 20/05/2025
Smells nice
[This review was collected as part of a promotion.] Haven’t used it long enough but will give an update after a month.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi there, We look forward to hearing your thoughts after your continued use of Genesis Défense Thermique Spray. We're confident you'll appreciate its heat protection and strengthening benefits with continued use. Please don't hesitate to reach out if any questions arise.
Linzikquew
51.747348204E12 15/05/2025
Can't Live Without It
[This review was collected as part of a promotion.] Since I started using this, my hair has been silkier, shinier, and honestly it seems thicker.
Originaly posted on kerastase-usa.com
Bianca A
51.747318515E12 15/05/2025
A must have
Love this because it doesn’t weigh my hair down at all like other products do. It also leaves my hair smelling so good!!
Originaly posted on kerastase-usa.com
Marisa24601
51.747230312E12 14/05/2025
Magic
[This review was collected as part of a promotion.] This stuff is pure magic. My hair has never looked better.
Originaly posted on kerastase-usa.com
Roroha
51.747074607E12 12/05/2025
Amazing product works magic definitely recommend
[This review was collected as part of a promotion.] Kept my hair, shiny and beautifully styled would definitely recommend to fine hair
Originaly posted on kerastase-usa.com
Jazzy09
51.746993606E12 11/05/2025
Love the way it smells
[This review was collected as part of a promotion.] As I say about every product I’ve bought from KÉRASTASE, my hair looks and feels better than ever, this product made my hair feel healthier too
Originaly posted on kerastase-usa.com
La La 1
51.747062909E12 12/05/2025
Love
[This review was collected as part of a promotion.] Love this product
So much! Does wonders for your hair!
Originaly posted on kerastase-usa.com
BB1315
51.746970206E12 11/05/2025
Visible Improvement
[This review was collected as part of a promotion.] I am very pleased with all the Kerastase hair products I have purchased. I have seen less shedding and new growth. My hair feels so light and clean when I blow it out.
Originaly posted on kerastase-usa.com
Blondie61
51.746592203E12 07/05/2025
Amazing!!
This heat protecting spray is the best one I have ever used! It leaves my hair soft, manageable and it smells amazing!
Originaly posted on kerastase-usa.com
Jenny Ng
51.746554407E12 06/05/2025
The one and only Spray
My hair is very tangled and damaged due to all the coloring i had on and this one is a life saver for me. Easy to comb and style with just a few spray , protect from the heat
Originaly posted on kerastase-usa.com
Asch asch
51.746406803E12 04/05/2025
Génesis heat protection
Scent,soft,not heavy… and most importantly IT PROTECTS THE HAIR ! Am In love!!
Originaly posted on kerastase-usa.com
Samantta
51.746321305E12 03/05/2025
Heat protection
A lot of protection for my hair against hair dryers and hot wheater
Originaly posted on kerastase-usa.com
KristineS
51.746284407E12 03/05/2025
Love this product
[This review was collected as part of a promotion.] Great product and will buy again.. really protects my hair
Originaly posted on kerastase-usa.com
Descabelada
41.746196288E12 02/05/2025
Good
I was looking for a product to protect my hair. It’s really good, but I will try another one. I was reading and I think kerastase has others stronger than this one.
Originaly posted on kerastase-usa.com
Banana5555
51.745964904E12 29/04/2025
One of my faves!
Obsessed with this product! Use it daily part of my routine!
Originaly posted on kerastase-usa.com
Defense Thermique 150ml
Kerastase - Genesis
Anti Hair-fall Fortifying blow-dry fluid for weakened hair, prone to falling due to breakage. Provides anti-breakage action and heat protection up to 220°C. Ensures optimal hydration without frizz.
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1 (877) 625-4735 