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
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
Originally 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.
Originally posted on kerastase-usa.com
Sweet2
51.74238561E12 19/03/2025
Great product
This is a solid product for heat protection and damage prevention
Originally 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
.
Originally posted on kerastase-usa.com
Anonymous
51.742257805E12 17/03/2025
Great Finishing Product!
Wonderful product; hair feels silky smooth. Highly recommended.
Originally 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!
Originally 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
Originally 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.
Originally 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.
Originally posted on kerastase-usa.com
Mpaola
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.
Originally 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!
Originally posted on kerastase-usa.com
Anonymous
51.741652109E12 10/03/2025
Love it.......... . ............................
Smells good......................................
.....
Originally 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.
Originally posted on kerastase-usa.com
Cbear2001
51.741573805E12 09/03/2025
Great protector
It works great and smells amazing!! Definitely buy!!
Originally 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.
Originally 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.
Originally 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!
Originally 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!
Originally 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!
Originally posted on kerastase-usa.com
mrsmelissa
51.740871813E12 01/03/2025
Nice product
Nice heat protection that strengthens and gives shine
Originally 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.
Originally 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.
Originally 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.
Originally 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.
Originally 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.
Originally 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.
Kristie H
51.740340808E12 23/02/2025
Great
Smells great and is wonderful on your hair. Makes your hair so soft
Originally posted on kerastase-usa.com
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.
Originally 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!
Originally 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.
Originally 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.
Originally 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
Originally 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.
Originally 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.
Originally 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.
Originally 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.
Originally 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.
Originally 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!!!
Originally 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
Originally 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 !
Originally 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.
Originally 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
Originally 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!
Originally 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
Originally 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.
Originally 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
Originally 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.
Originally 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!
Originally 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.
Originally 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.
Originally posted on kerastase-usa.com
Haze3266
41.741619713E12 10/03/2025
Unsure
Unsure about this one. I like it but it does leave a certain film on my hair. Need to experiment with the amount i use to see if this improves
Originally posted on kerastase-usa.com
Chelsih
51.738026022E12 27/01/2025
Best heat protector
[This review was collected as part of a promotion.] I use this dailyy, after every shower! Has kept my hair healthy and soft, also doubles as a Detangler . Perrrfect product! Must haveee!
Originally posted on kerastase-usa.com
KVA02_
51.738009841E12 27/01/2025
Love my hair
[This review was collected as part of a promotion.] Love love love, mu hair is very oily and fine, i I take care of and maintain my hair from home and for me it is more than a luxury..
Originally posted on kerastase-usa.com
Putnam
51.739276114E12 11/02/2025
Amazing
[This review was collected as part of a promotion.] This product is amazing!! I have semi curly hair and I use this when I straighten my hair. It leaves it soft and shiny!
Originally posted on kerastase-usa.com
rubina
51.737837927E12 25/01/2025
cant go without
i love all things Kerastase and this heat protecting spray is my go to
Originally posted on kerastase-usa.com
Rosaury
51.73766966E12 23/01/2025
Leaves hair soft
I like it because it doesn't leave my hair greasy.😍
Originally posted on kerastase-usa.com
Heat Protectant
51.73759131E12 22/01/2025
Amazing
I use this every time I wash my hair before I blow dry and straighten. It helps with breakage and damage from the heat. Love it! It also smells amazing!
Originally posted on kerastase-usa.com
mel777
51.738872297E12 06/02/2025
Me & my daughter love!!
[This review was collected as part of a promotion.] Love the genisus line. This keeps our glorious crowns o silk protected from the heat
Originally posted on kerastase-usa.com
Meggie423
31.737139845E12 17/01/2025
Smells Great
[This review was collected as part of a promotion.] Overall good product but I prefer the Extenioniste Thermique over this.
Originally posted on kerastase-usa.com
Reply from Consumer Care Center
Hi there, Thank you for your feedback. We appreciate you trying Genesis Défense Thermique Heat Protecting Spray and understand your preference for Resistance Extentioniste Thermique. While both offer heat protection, they cater to slightly different hair needs. Extentioniste is excellent for strengthening and promoting length, while Défense Thermique focuses on reducing hair fall due to breakage. It's great that you've found the product that best suits your hair goals.
Anonymous
51.737331225E12 19/01/2025
collection great
[This review was collected as part of a promotion.] Great shampoo ever, money is worthy, i love it so much
Originally posted on kerastase-usa.com
Stacey317
41.737270909E12 19/01/2025
Smells great! Protects hair from heat.
Love this Kerastase line and plan to continue ordering. Seems to add some shine and definitely protects my hair from heat.
Originally posted on kerastase-usa.com
Arual251987
51.737214221E12 18/01/2025
Amazing!!!! the best!!!!
[This review was collected as part of a promotion.] Excellent, simple to use allowed me to easily choose a suitable of very reasonably price which I could quickly order. Love it!!!!
Originally posted on kerastase-usa.com
CaroD
21.737054407E12 16/01/2025
Statique, statique…
J’ai jamais eu autant de statique de ma vie avec ce produit.
Originally posted on kerastase.ca
Reply from Centre Conseil Consommateur
BonjourCaroD ! Merci de partager avec nous quelques retours sur notre Genesis Défense Thermique. Les commentaires de nos consommateurs sont très importants pour nous et nous aident à améliorer tous nos produits. Nous nous excusons que vous n'ayez pas aimé ce produit et nous apprécions que vous partagiez votre expérience. Nous vous remercions d'avoir essayé ce produit et nous transmettrons vos commentaires aux autres membres de notre équipe.
Mom of 4 Mimi of 5
51.736896562E12 14/01/2025
So good for my hair
I love using this product, it makes my hair stronger, softer and easier to comb through
Originally posted on kerastase-usa.com
Jayhawk
51.736374508E12 08/01/2025
Excellent product
[This review was collected as part of a promotion.] Great product! Leaves my hair soft, smooth, and detangled. Fragrance is great and not overpowering. Will be buying again!
Originally posted on kerastase-usa.com
Maureen Turk
51.736353829E12 08/01/2025
Holy Grail Heat Protectant
This is my holy grail heat protectant - coupled with the shampoo, conditioner and mask - it’s the best!
Originally posted on kerastase-usa.com
Zoesheis
51.736353829E12 08/01/2025
Game changer
A must-have for dry, weakened hair that's worth the price. Not a fan of the spray nozzle, but I use two pumps in my hands for better control when applying
Originally posted on kerastase-usa.com
Lolowther
51.73610721E12 05/01/2025
Makes combing wet hair a breeze
[This review was collected as part of a promotion.] Soft and shiny hair. So healthy and does not weigh down my fine hair
Originally posted on kerastase-usa.com
Anonymous
51.736054108E12 05/01/2025
Love it
Love this product and it also smells great! No more flyaways
Originally posted on kerastase-usa.com
Cinchchilling
51.736178311E12 06/01/2025
We use it all the time
Smells great, leaves hair soft and I think it actually helps dry hair quicker but that may just be in my head.
Originally posted on kerastase-usa.com
JenTwin
51.736178311E12 06/01/2025
Smells Amazing!!!
[This review was collected as part of a promotion.] I absolutely love this heat protecting spray. It is milky and soft and does not weight down my hair, which is good because I have thin hair. I'm addicted to the scent.
Originally posted on kerastase-usa.com
Victoria F
41.736088317E12 05/01/2025
Good protective product
I like this product but I don't love it. I think it is protective but it seems to weigh my hair down. It's pretty limp when I use it. I've tried varying the amount and it doesn't seem to matter.
Originally posted on kerastase-usa.com
Nina Mizoury
51.735847111E12 02/01/2025
10/10
[This review was collected as part of a promotion.] I love this product once I blow dry my hair and finish styling it comes out perfect shiny and beautiful
Originally posted on kerastase-usa.com
Rachey2098
41.735783205E12 01/01/2025
Good product
This spray provides smoothing heat protection. I like it fairly well.
Originally posted on kerastase-usa.com
Moderation
51.735782309E12 01/01/2025
Love this product
[This review was collected as part of a promotion.] I love this leave in product. It's light weight and detangles your hair and protects from the heat of blow drying. I love it. It's a game changer.
Originally posted on kerastase-usa.com
Karen2025
51.735425908E12 28/12/2024
Love the smell
[This review was collected as part of a promotion.] Love everything about this product, highly recommend.
Originally posted on kerastase-usa.com
Special K
51.735411512E12 28/12/2024
Lifesaver
[This review was collected as part of a promotion.] A lifesaver for my fragile hair! It protects against heat and reduces breakage, leaving my hair soft and manageable. Perfect for daily use.
Originally posted on kerastase-usa.com
Kristin227
51.735409711E12 28/12/2024
A Game-Changer for Heat Styling!
I absolutely love the Defense Thermique Heat Protecting Spray! As someone who uses heat tools regularly, I’ve tried countless products, but this one truly stands out. It’s lightweight, non-greasy, and leaves my hair feeling silky smooth after styling. I’ve noticed a significant difference in the health of my hair—no more dryness or split ends! TI also smells really good! :)
Originally posted on kerastase-usa.com
OHsquirrel
51.735336807E12 27/12/2024
LOVE GENESIS PRODUCTS
WOWZA!! LOVE the Genesis scent in all products. I spray this into my hand and work through damp hair. The magic happens with a light blow dry, as soon as heat hits then hair turns shiny and silky. My fine hair loves it. I love it.
Originally posted on kerastase-usa.com
Lina k
41.735253107E12 26/12/2024
Heat protection
This works wonderssss. It smells amazing, has heat protectant and my stylist tells me to use it as a detangler as well
Originally posted on kerastase-usa.com
Ginadeee
51.735231509E12 26/12/2024
So good!
[This review was collected as part of a promotion.] Smells so good and protects my hair from being frizzy.
Originally posted on kerastase-usa.com
Shannon988
31.736359842E12 08/01/2025
Overpowering scent
The product gave my hair great texture and shine. But the scent was not for me. Think baby powder and roses. The smell of my hair was so strong/unpleaant it actually woke me up throughout the night. My husband wasn’t a fan either.
Originally posted on kerastase-usa.com
Reply from Consumer Care Center
Hello Shannon988, We appreciate you sharing your feedback on the Defense Thermique Heat Protecting Spray. While we're glad to hear it delivered great texture and shine, we understand the scent wasn't to your liking. We appreciate your feedback and we will share it with the brand team. We value all feedback as we continually work to improve our products.
clairelk
51.73490301E12 22/12/2024
Amazing for fine hair!
[This review was collected as part of a promotion.] Smells INCREDIBLE and makes my hair feel so light and smooth. Use before blow drying, and it prevents frizz without weighing down my fine hair. Will keep buying forever.
Originally posted on kerastase-usa.com
Gingersmom
51.734244209E12 15/12/2024
Protects the hair and smooths
I blow dry and flatiron my hair daily and this product has worked so well to protect my hair from breaking. I’ve noticed a reduction in my split ends as well. My hair looks so healthy and smooth since I’ve started using this. It smells really nice too.
Originally posted on kerastase-usa.com
Jill J
51.734203714E12 14/12/2024
Obsessed
Love the smell how it makes my hair feel everything!
Originally posted on kerastase-usa.com
Purchaser
21.734025594E12 12/12/2024
Smells awful (like a strong male cologne)
The smell was unpleasant, I felt I had to wash my hair immediately. The smell was totally unlike the non-spray version of this product (Discipline Heat Protecting Leave-In Treatment For Frizzy Hair), which I use all the time.
Originally posted on kerastase-usa.com
Reply from Consumer Care Center
Hello, Thank you for reaching out about your recent experience with Genesis Defense Thermique Heat Protecting Spray. We are interested in collecting more information and making things right. Please give us a call at 877-254-9949 9:00 am – 6:00 pm ET Monday - Friday EST for assistance and provide the reference #38780042. Looking forward to speaking with you.
Dolly20
51.73386981E12 10/12/2024
Love it.
Leaves my hair soft and manageable. It smells amazing too
Originally posted on kerastase-usa.com
vvbella
51.733694311E12 08/12/2024
Hair protected and light like a feather!
[This review was collected as part of a promotion.] This product not only protects the hair from the heat and breakage but also leaves it so smooth and light. I love it!
Originally posted on kerastase-usa.com
Marysea
51.733463005E12 06/12/2024
Best heat protectant
[This review was collected as part of a promotion.] I usually don’t use heat protectant because I barely use heat products but even using this as just a little anti frizz treatment is amazing! Definitely will be buying again
Originally posted on kerastase-usa.com
Jadore7
51.733499194E12 06/12/2024
Meilleur traitement contre la chaleur
Kérastasse est l'une des meilleure marque au monde pour les produits capillaire. Ce produit sent bon, en plus de proteger mes cheveux convenablement contre la chaleur à long terme
Originally posted on Home Tester Club
Renee K
51.733292005E12 04/12/2024
Very Soft
[This review was collected as part of a promotion.] This smells amazing and my hair is so soft after I blow dry
Originally posted on kerastase-usa.com
Thamy Goncalves
51.733288404E12 04/12/2024
The best heat protector ever
[This review was collected as part of a promotion.] I've been using it for less than a month and I can already feel my hair smooth and shiny. For blond hair, that is a miracle
Originally posted on kerastase-usa.com
Robin Buss
51.733268608E12 03/12/2024
Kerastase Defense Thermique Heat Protecting Spray
Excellent product. Hair is protected, feels thicker, stronger.
Originally posted on kerastase-usa.com
MeliMel
51.73317591E12 02/12/2024
Smells great and protects during styling
[This review was collected as part of a promotion.] Love this product …. It is a MUST have…if on a budget at least purchase this!
Originally posted on kerastase-usa.com
kerastase amazing
51.733170509E12 02/12/2024
Love it
[This review was collected as part of a promotion.] Love this product, it makes such a differnece in my hair
Originally posted on kerastase-usa.com
Lounjin
51.732922106E12 29/11/2024
Amazing
I loved this product left my hair smelling good all day and protected my hair from heat damage!
Originally posted on kerastase-usa.com
Sebastiana
51.733123934E12 02/12/2024
Smell so good!!!!
This collection smells so good! Definitely my favorite!
Originally posted on kerastase-usa.com
EileenT
51.733010305E12 30/11/2024
Luxurious Finish
I spray this on my hair after washing, it smells devine and I can comb my hair so easily with no tangles. You will love this product!
Originally posted on kerastase-usa.com
Gracev
51.732985108E12 30/11/2024
Fantastic
Fantastic product ! My hair is in great condition because of it.
Originally posted on kerastase-usa.com
Haleyy
51.732744811E12 27/11/2024
smells amazing!
[This review was collected as part of a promotion.] I use this multiple times a week On mine and my daughters hair! It does not leave a texture in your hair and it smells amazing! Highly recommend!
Originally posted on kerastase-usa.com
GabbiM
11.741720824E12 11/03/2025
Please read below
I didnt like the feeling it leaves in your hair when you apply it (a mix of sticky and rough). In addition, I realized my hair gets dirty quicker than when I dont use it.
Originally posted on kerastase-usa.com
Reply from Consumer Care Center
Hello GabbiM, thanks for your feedback on our Defense Thermique Heat Protecting Spray. Consumer feedback like yours is extremely helpful, as it allows us the opportunity to improve our products and services. All these comments will be shared with the appropriate teams.
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.
