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
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
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.
lkquew
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
ASTCHA
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
Alby15
51.745863208E12 28/04/2025
Simply exceptional
[This review was collected as part of a promotion.] The change in my hair with this heat protector has simply been wonderful, I'm loving it
Originaly posted on kerastase-usa.com
JessieLyn
51.745857809E12 28/04/2025
Amazing detangler
This is an amazing leave in conditioner and is great at detangling. My hair is very fine and tangled easily when washing, but this product it brushes out quickly. I love the smell of it.
Originaly posted on kerastase-usa.com
Miss A
51.745884805E12 28/04/2025
Favorite hair ritual
[This review was collected as part of a promotion.] I love the gentleness , fragrance and protection that this gives my hair
Originaly posted on kerastase-usa.com
Dee123
41.745848808E12 28/04/2025
Works well
I recently purchased this product for the first time and was not disappointed. It left my hair soft and manageable and smelling great!
Originaly posted on kerastase-usa.com
CarlaC
51.745387107E12 23/04/2025
Impressive!!!
[This review was collected as part of a promotion.] I've only just started using this, but I already
love how lightweight it feels on my hair. It
doesn't leave any residue, and my hair feels
soft and smooth after styling. There's also a
lovely subtle scent that's not overpowering
Excited to see long-term results with heat
protection!
Originaly posted on kerastase-usa.com
Anonymous
51.745186409E12 20/04/2025
Exactly what I was looking for
[This review was collected as part of a promotion.] This thermique proctector really leave my hair smooth without any sensation of it being burnt
Originaly posted on kerastase-usa.com
Anonymous6
11.745336249E12 22/04/2025
Disappointed
Hoping this would work however could not get past the smell
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi Anonymous6, we appreciate you reaching out about Defense Thermique Heat Protecting Spray. We are sorry to hear you are not a fan of the fragrance. Your feedback is valuable to us and will be shared with the appropriate teams for review. It is our hope that you will continue to explore the many products we offer with greater confidence and satisfaction in the near future.
Ana3012
51.744941605E12 17/04/2025
Excellent product
This product makes my hair so soft and shine. Even I use hair dye my hair keeps soft and shiny when I use this product
Originaly posted on kerastase-usa.com
AnnieG
51.744810208E12 16/04/2025
Favorite heat protector
I Love this heat protector. It smells so good and protects my hair. Leaves my hair smooth without frizz.
Originaly posted on kerastase-usa.com
Miss Jeanette
51.744810208E12 16/04/2025
Love this product!
Love the way my hair feels after using it plus it smells good!
Originaly posted on kerastase-usa.com
K10inNH
51.744575309E12 13/04/2025
Love this product and the scent is so nice!
During Covid, I got the virus and as a result, my thick hair started falling out. I was devastated and a friend turned me onto the Kerastase Genesis line. I have used it ever since because it restored my hair back to the thickness that it once was (maybe even more so). I have since recommended this line to SO MANY of my friends (in their 50's) who are suffering from hair loss, and they, like me, don't regret purchasing this!
Originaly posted on kerastase-usa.com
Beachbum
51.744740023E12 15/04/2025
Live this stuff
[This review was collected as part of a promotion.] I absolutely love this spray smells amazing and makes my hair look great.
Originaly posted on kerastase-usa.com
Cheri S
51.747959614E12 22/05/2025
So far, so good
I have recently begun using Kerastase products as my fine, thin, color-treated hair has been looking scary! I really like the way this product smells and the way my hair feels; time will tell if the heat protection makes a difference in my ‘do!
Originaly posted on kerastase-usa.com
Oks1212
51.74430171E12 10/04/2025
the BEST
This is the best heat protectant leave in conditioner. i have super fine and somewhat dry hair, this product makes my hair look like it was professional styled on a supermodel. I always have 2 bottles as back up. Also smells absolutely amazing
Originaly posted on kerastase-usa.com
YvetteV
51.744308908E12 10/04/2025
Best MilkSpray out there!
This is a great out the shower, use while still wet product I use not only on myself but my son who is growing out his hair. Love the way it sprays. Gets all over coverage when using.
Originaly posted on kerastase-usa.com
Aquirogar02
51.744299011E12 10/04/2025
Love the Defense Thermique Heat Protecting Spray!
[This review was collected as part of a promotion.] I really liked the Defense Thermique Heat Protecting Spray! It leaves my hair feeling soft and provides amazing protection. After using it with my blow dryer or flat iron, my hair looks so much shinier and smoother. The best part is the incredible smell—it’s so refreshing! I definitely recommend it for anyone who wants to protect their hair while keeping it sleek and shiny.
Originaly posted on kerastase-usa.com
Kshep76
51.744299011E12 10/04/2025
Works great!
[This review was collected as part of a promotion.] I like this heat protectant. I thought it would be too thick or feel greasy, but it doesn't. I use after I towel dry my hair, then blow dry.
Originaly posted on kerastase-usa.com
Krista G
41.744240506E12 09/04/2025
Review
It’s a good product, helps with heat protection and smells nice
Originaly posted on kerastase-usa.com
Vicky G
31.744296335E12 10/04/2025
Meh
[This review was collected as part of a promotion.] I did not find this leave in particularly helpful untangling my hair nor did I care for the scent.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hello Vicky G, thanks for sharing your feedback on our Defense Thermique Heat Protecting Spray. We strive to deliver products that exceed the expectations of our consumers, therefore, we always welcome all feedback, whether positive or negative. Your feedback allows our team the opportunity to improve our products. We thank you for the time you have taken to share these comments.
Leela78
51.743983105E12 06/04/2025
My go-to heat protectant
I won't go without this heat protectant. It's absolutely perfect because it's very lightweight, it smells amazing, and it doesn't make my hair greasy.
Originaly posted on kerastase-usa.com
AnnaVkl
51.743775209E12 04/04/2025
Very good
[This review was collected as part of a promotion.] This is a really good product, high quality. It doesn't weigh down the hair. After using it, the hair is soft and shiny.
Originaly posted on kerastase-usa.com
Lilo07
51.743713131E12 03/04/2025
Defense termique
[This review was collected as part of a promotion.] I hope it protects my hair. I'm loving this line is perfect
Originaly posted on kerastase-usa.com
LJohnson
41.743699615E12 03/04/2025
Nice smell and texture
Smells nice. Doesn’t leave my hair feeling tacky like my previous heat protectant. Too early to know if it’s keeping my hair from getting damaged, but I’ll stick with it long enough to find out. Will be 5 stars if it’s doing its job.
Originaly posted on kerastase-usa.com
Hurley
51.743689712E12 03/04/2025
Smells beautiful
This product conditions and protects your hair. It also smells beautiful. You can still smell it a few days after.
Originaly posted on kerastase-usa.com
JMendez
11.74368881E12 03/04/2025
Did NOT like
I have thin, 3a/3b curls, oily scalp usually and dry ends. I do blow-dry my hair after every wash because it's easier to manage. The nozzle of this spray bottle is so awful considering how expensive this product is. It dispenses the product in a stream which does not work for me, I have tried to spray from afar and it wastes too much product. I have also tried to spray it on my hands to then scrunch it into my hair and that also did not work. I also tried to spray it aiming directly at the ends and after blowdrying, my hair was so greasy and weighed down. I know my hair and I know it's because the bottle dispenses too much product. It's not the result you want when you have thin hair and your scalp is already greasy. You either get too much or too little with this applicator. It also caused me to have frizz. I should've returned this when I had the chance or given it away. I still have about 80% of the bottle left. I wanted to love it because I do enjoy the genesis serum but I will never buy a spray heat protectant again.
I bought this along with the Extentioniste Thermique Length Care Gel Cream to compare. And I love the cream better than this spray. The cream is easier to apply because you can control how much you use. My hair is smoother and bouncier. I bought the whole Resistance Therapiste line and use it after every wash and my hair is noticeably better. It's not burned or damaged with styling tools and after my last hair cut 4 months ago, I have not noticed any split ends. I would recommend a cream heat protectant versus a spray one.
Originaly posted on kerastase-usa.com
Jen Kay R
51.743596112E12 02/04/2025
Perfect for combing wet blond highlighted hair
As anyone who regularly highlights their hair blond knows, combing it out after washing can be a nightmare. With fragile tangles everywhere this spray allows your brush (or comb) to gently glide through. As a de-tangeler it is amazing and smells lovely while not leaving a heavy residue (I have thin fine hair) and provides heat protection. I LOVE this product and I have tried them all!
Originaly posted on kerastase-usa.com
Kerastase Only User
41.743509712E12 01/04/2025
Perfect for Finer Hai
I didn't believe much products that claimed to add volume to hair, until this one. It far exceeds that. It makes my fine hair look fuller and thicker! Very impressed!
Originaly posted on kerastase-usa.com
Mrs Payne
51.743299105E12 29/03/2025
It gets Better!!
There is nothing better than this!!! Absolutely love this hair product!
Originaly posted on kerastase-usa.com
Pretty12
51.747959612E12 22/05/2025
I love Thermique Heat Protecting spray
[This review was collected as part of a promotion.] I love Thermique Heat protecting spray, it's light on my hair and protects my hair from my heated styling tools
Originaly posted on kerastase-usa.com
ReneeK
51.742940009E12 25/03/2025
Smooth
This product really helps protect my hair from blow drying it every day.
Originaly posted on kerastase-usa.com
KJ4547
51.743012908E12 26/03/2025
BEST Anti-Frizz Styling product ever!!
The BEST styling, anti frizz, heat protecting product I have ever used! It absolutely does NOT leave hair tacky and sticky like hairspray, like another reviewer said. I think that person must have been reviewing a different product by mistake. This leaves your hair so smooth, free of frizz, easy to blow dry, shiny, and it holds a blow dry so well! THE BEST!! Buy it!!
Originaly posted on kerastase-usa.com
KPro123
21.743019603E12 26/03/2025
Bad Jet Spray
I don’t like the way it sprays… it’s like a fine jet and doesn’t give good coverage. I end up having to spray multiple sprays in my palm and then work it through the hair
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi there, we appreciate your feedback on our Defense Thermique Heat Protecting Spray. We understand how disappointing it is to have issues dispensing the product. We make every effort to provide the highest quality products for our consumers and we will be sure to pass your comments along. It is our hope that you will continue exploring our products while finding greater satisfaction in the results they deliver.
Tabetha
51.742595311E12 21/03/2025
Love. This!
Excellent product - my fave for days I blow dry. Makes my dry hair feel silky and strong.
Originaly posted on kerastase-usa.com
Halley kat
51.742697906E12 22/03/2025
My go to
[This review was collected as part of a promotion.] This has been my go to for years! Super light, not greasy and smells amazing.
Originaly posted on kerastase-usa.com
Lina92
51.742498109E12 20/03/2025
Love is delicious, it leaves my hair so pretty.
Love is delicious, it leaves my hair so pretty. Les Rasta se is the best
Originaly posted on kerastase-usa.com
DuckieFox
51.742398207E12 19/03/2025
Great for detangling.
I have just started using this product, but so far I like it. It really helps with detangling and smoothing hair. It doesn’t make my hair as shiny as I would like, but I like how it helps with frizz.
Originaly posted on kerastase-usa.com
Sweet2
51.74238561E12 19/03/2025
Great product
This is a solid product for heat protection and damage prevention
Originaly posted on kerastase-usa.com
Cali425
51.742279405E12 18/03/2025
Protection without Weight
[This review was collected as part of a promotion.] Love this for my fine hair! Doesn’t weight my hair down and blow out lasts for 3-4 days. Highly recommend
.
Originaly posted on kerastase-usa.com
Anonymous
51.742257805E12 17/03/2025
Great Finishing Product!
Wonderful product; hair feels silky smooth. Highly recommended.
Originaly posted on kerastase-usa.com
Mh7878
51.742170505E12 16/03/2025
Love it!
[This review was collected as part of a promotion.] Favorite heat protector! Light and yet moisturizing!
Originaly posted on kerastase-usa.com
Mini12
51.742137213E12 16/03/2025
Favorite heat protectant spray
Hands down best protectant and smells amazing! Makes your hair feel silky and shiny
Originaly posted on kerastase-usa.com
Maridds
51.742252406E12 17/03/2025
Must have
The best heat protection I have ever used. My hair is smooth and soft.
Originaly posted on kerastase-usa.com
Grace111111
51.742219112E12 17/03/2025
Heat protectant
I use hot tools about 3 days a week. After using this product to have no additional heat damage. Does not make my hair greasy or weighed down, but I don’t use it on my roots.
Originaly posted on kerastase-usa.com
PaolaD
51.742061612E12 15/03/2025
My hair looks different after blowing
[This review was collected as part of a promotion.] I loved the fragance and the texture of the product.
Originaly posted on kerastase-usa.com
Anonymous
51.741708817E12 11/03/2025
The Perfect Products
This product is perfect alongside your flat iron and Humid Weather! My hair looks and feels amazing using Kerastase. After years of trying different products to fight the frizz - I finally found the cure!
Originaly posted on kerastase-usa.com
Anonymous
51.741652109E12 10/03/2025
Love it.......... . ............................
Smells good......................................
.....
Originaly posted on kerastase-usa.com
AnnaSz
51.741392004E12 07/03/2025
Great heat protectant, leaves hair very soft
[This review was collected as part of a promotion.] I have fine hair and I love using this after I shower to blow dry my dry. It leaves my hair soft and does not weigh it down.
Originaly posted on kerastase-usa.com
Cbear2001
51.741573805E12 09/03/2025
Great protector
It works great and smells amazing!! Definitely buy!!
Originaly posted on kerastase-usa.com
YadiraP
51.741374009E12 07/03/2025
Defense Thermique Heat Protecting Spray
Best he.at protecting spay in the market. My hair feels amazing after styling.
Originaly posted on kerastase-usa.com
Jesska
51.741361407E12 07/03/2025
Great
[This review was collected as part of a promotion.] Smells great makes my hair feel soft and silky! Not heavy at all.
Originaly posted on kerastase-usa.com
Liz WA
51.741485605E12 08/03/2025
Silky hair
[This review was collected as part of a promotion.] This makes my hair smell so good and feel so silky. Even better it protects it from heat!
Originaly posted on kerastase-usa.com
HillaryL
51.741300208E12 06/03/2025
Love it!
Smells nice and mists very evenly into my hair. I really love the Genesis line and looking to purchase more!
Originaly posted on kerastase-usa.com
Ashley713
51.741448713E12 08/03/2025
Good even for air drying
Another sample I've tried that got me to buy the rest of the collection, love it!
Originaly posted on kerastase-usa.com
mrsmelissa
51.740871813E12 01/03/2025
Nice product
Nice heat protection that strengthens and gives shine
Originaly posted on kerastase-usa.com
No public name
51.741004113E12 03/03/2025
No title
I have extremely long and thick hair. Been using this product for almost two years now. Applying this product after washing, rinsing and drying my hair leaves it soft and extremely manageable. Could not wear my hair long without this product.
Originaly posted on kerastase-usa.com
Shak R
41.740975306E12 02/03/2025
So far it’s okey
I like everything about this heat spray ;however for some reason it leaves my hair dry.
Originaly posted on kerastase-usa.com
KellyMH
51.740940212E12 02/03/2025
LOVE
I love this heat protectant. I use this most of the time, sometimes using Chroma Thermique Heat Protecting Serum. This one is particularly moisturizing while remaining light, and I feel like this one detangles my hair more easily as my fine hair is prone to tangling during a wash. This also smells fantastic and I feel like it's helping to strengthen my hair during my blow dry.
Originaly posted on kerastase-usa.com
P Rogers
51.740922212E12 02/03/2025
The best heat protector
Amazing product! Really take care of my hair and I’ve been noticing that it looks really smooth and shiny.
Originaly posted on kerastase-usa.com
KimberlyS
11.740583748E12 26/02/2025
scent and texture not typical quality
The scent is overpowering and unpleasant. I was out of the heat protecting creme and decided to try this. I'm sending it back (returns are not free), and ordering the creme. I wish Kerastase had a bigger selection of samples - this could have been avoided.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hello KimberlyS, thanks for sharing your honest feedback on our Defense Thermique Heat Protecting Spray. We are genuinely sorry to hear that you had a negative experience with our product. We understand the importance of product design and quality and we apologize for falling short in this area. Please trust us that we will investigate this further and take the necessary steps to improve our product. Your feedback is valuable to us and we appreciate your understanding.
SJules
11.740435683E12 24/02/2025
Terrible scent
It has a very strong scent that gives me a headache. It’s not a pleasant scent, either. Other Kerastase products I've used were all chemically scented, but none were so overpowering. I also couldn’t see much of a difference when used before blow drying. I only kept it because they don’t provide free returns. I don’t recommend this product.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hello SJules, We are sorry to hear about the experience you had with Defense Thermique Heat Protecting Spray. We want to speak with you directly about it. Please give us a call at 877-748-8357 M-F 9:00 am – 5:00 pm ET for assistance and provide reference 39920868.
Marianna Araujo
51.740016806E12 19/02/2025
Must-Have Leave-In with Heat Protection!
Title: “Must-Have Leave-In with Heat Protection!”
This leave-in conditioner is a game-changer! My hair feels incredibly soft, frizz-free, and protected from heat styling. It doesn’t weigh my hair down or leave any greasy residue. After two weeks of use, I’ve noticed less breakage and healthier-looking strands. A must-have for anyone who styles their hair regularly!
Originaly posted on kerastase-usa.com
Wendi B B
31.739984624E12 19/02/2025
Nothing special
It’s not as conditioning as I expected. In fact It doesn’t really do much. You have to apply with caution using very little. It will leave your hair feeling coated. It smells good. Overall I will not purchase this again.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi there! Thank you for reaching out about our Defense Thermique Heat Protecting Spray. We're sorry to hear that our product didn't meet your expectations in terms of conditioning and that you experienced a coated feeling. We appreciate you mentioning the need to apply with caution and that you liked the scent. We value your opinion and will take it into consideration as we continue to improve our formulations.
AZ HSS
51.740475607E12 25/02/2025
great product but not so great packaging
love the product but the spray itself needs some work. it mists very unevenly and takes extra effort to spread it evenly throughout my hair.
Originaly posted on kerastase-usa.com
Shary87
51.739643309E12 15/02/2025
The best product
Lo amoooo el mejor protector térmico , si quieres que tu pelo esté sano y con un olor rico tienes que usar este protector
Originaly posted on kerastase-usa.com
Coleys Hair
51.739758505E12 16/02/2025
My Go To
I’ve tried MANY other heat defense products, from cheap to super expensive, creams, gels, sprays, etc. and nothing compares to this one. My hair is soooo soft and shiny when I dry then style it after using this.
Originaly posted on kerastase-usa.com
Maggie507
41.739739611E12 16/02/2025
Liked it, didn't LOVE it
I gave this a try, because I love the scent. However, at the end of the day I like the Chroma Thermique Heat-Protecting serum better.
Originaly posted on kerastase-usa.com
Jaiello
51.73955063E12 14/02/2025
Another amazing product
[This review was collected as part of a promotion.] This heat protectant is the most expensive heat protectant I have ever purchased but.. it is also one of the best heat protectants I ever purchased. Love the smell and I have had so much less breakage since using this product. My hair looks so much healthier.
Originaly posted on kerastase-usa.com
Anonymous
51.739679304E12 15/02/2025
Worked really well
Spray to protect your hair from the heat of blow dry, iron, or curly your hair. Smell amazing and your hair smooth and shinny not sticky.
Originaly posted on kerastase-usa.com
Jennyannie
51.739500209E12 13/02/2025
My favorite heat protector.
Love the smell and always leaves my hair frizz free and silky. My new favorite heat protector.
Originaly posted on kerastase-usa.com
Lisaan
51.739498415E12 13/02/2025
Helps with heat
Give this a good spray after you towel dry your hair and before you blow dry and you will not be disappointed! This protecting spray will help keep your hair healthy while you use a blow dryer and straightener. After I used it, my hair looked healthy and voluminous! It's a game changer! All those other sprays never worked for me. This one does, and the smell...glorious!!!
Originaly posted on kerastase-usa.com
Shantal
51.739385012E12 12/02/2025
Reduced hairfall
Love this product , great smell and definately reduced hair fall to an extent
Originaly posted on kerastase-usa.com
MarcePat
51.739332807E12 11/02/2025
Great product
[This review was collected as part of a promotion.] Makes my hair super soft and manageable. Love it. Would buy it again !
Originaly posted on kerastase-usa.com
Lakegirl
51.739154606E12 09/02/2025
Feel Secure with Defense Against Breakage
The heat protecting spray provides a great defense against my hair breaking off while drying my hair. It is easily applied and makes you feel secure that your hair will not be breaking off while drying your hair. Keeps hair moist and shiny.
Originaly posted on kerastase-usa.com
mabelen
31.739198301E12 10/02/2025
Overprice
Good but not enough for the price.
It does not work well in my hair
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hello Mabelen, We are sorry that our Defense Thermique Heat Protecting Spray did not meet your expectations. We strive to deliver products that will be 100% satisfactory to our consumers and want to know when these expectations are not met. We will be passing on your comments to others in our team.
Lori Luv
51.738969212E12 07/02/2025
Amazed at this blowout spray!
[This review was collected as part of a promotion.] This spray really surprised me, hair was soft, voluminous and smooth. Sometimes my hair frizzy after blow drying, felt confident this product was protecting my hair, only need a few sprays and wa la gorgeous locks!
Originaly posted on kerastase-usa.com
Sonic23
41.738899907E12 06/02/2025
Amazing
[This review was collected as part of a promotion.] I dry my hair very often. So a thermique heat protection it’s a must of my hair journey, I use this spray and love it
Originaly posted on kerastase-usa.com
fefe95
51.738813503E12 05/02/2025
I am really enjoying this product
I am really enjoying this product, I am on my second bottle and I love the smell and how makes my hair feel.
Originaly posted on kerastase-usa.com
Happy shopper
51.738972809E12 07/02/2025
Great
I like this product smell and dies what it says! I recommend this product
Originaly posted on kerastase-usa.com
DollyG
51.738804506E12 05/02/2025
Smells greats
It leaves my hair very soft and smells amazing. I love the entire line.
Originaly posted on kerastase-usa.com
Baileyyy
51.738636215E12 03/02/2025
Great heat protectant!!
[This review was collected as part of a promotion.] Love this product for when I have to straighten my hair!
Originaly posted on kerastase-usa.com
Tinkerdust00
51.738543531E12 02/02/2025
It smells so nice
It left my bathroom and hair smelling like a hair salon. My hair was soft.
Originaly posted on kerastase-usa.com
Lina92
51.738355415E12 31/01/2025
Love this product
This product is wonderful, I love the way it smells and how it leaves my hair. Honestly, it's the best. Kerastase never lets us down.
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 