Kérastase Genesis Defense Thermique Treatment 150ml
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£34.05
Or 3 interest free payments of £11.35 with frasers plus
In stock | Usually dispatched within 24 hours

Designed to help with hair strength, the Kérastase Genesis Defense Thermique Treatment is a protective, nourishing product that locks in that enviable healthy appearance. Whether your strands are weak or fall easily, the treatment means your blow drying causes less damage thanks to its protective heat shield.
With Aquaxyl, Edelweiss Native Cells and Ginger Root, your hair will receive a burst of up to 88% hydration for a frizz-free look for up to 24 hours. Lightweight, the treatment doesn’t weigh down your strands, keeping your mane full-bodied with plenty of volume. Hair will be more manageable with fewer tangles, making brushing easier and less likely to cause breakage.
Apply on wet lengths. Blow dry.
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.
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Kérastase Genesis Defense Thermique Treatment 150ml
£34.05
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Customer Reviews
5 stars rating 267 reviews
4 stars rating 43 reviews
3 stars rating 18 reviews
2 stars rating 7 reviews
1 stars rating 2 reviews
Top Customer Reviews
We really appreciate your thoughts! Our customer reviews on LOOKFANTASTIC are as real and authentic as our love for beauty, and we’re proud that they belong just to you and don’t reflect the opinions of us or The Hut Group.
Great for fine hair
Great detangler and leaves hair so soft!! My hair is fine, bleached and ultra damaged..this product is perfect. My favorite kerastase leave in.
by Juliana
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Love it!
One of the product that I use on my hair routine. It allows the extra heat protection my hair needs.
by Carla Ribeiro Oleiro Verified Purchase
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A Must Have!
I have been using this for a few months now and will continue to repurchase over and over! It is the only thing I have found that de-tangles my hair after washing and also leaves me frizz free! A bonus that it smells incredible!
by Ella Verified Purchase
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Very nice but...
Great detangler and heat protector (it smells nice too) but Ive been using this for several weeks now and haven’t noticed any change in the amount of hair falling out or breaking off when brushing (I have fine dry hair).
by Lucy E Verified Purchase
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WOW 🤩
Left my hair gorgeously soft & tangle free. I’ve got very long lightened hair & am 54, so am always on the look for something new to try. I used in conjunction with the Genesis mask. Also, I regularly use a very well know bonding treatment no1 & 2! Definitely a very good system I will now incorporate as I’ve found that masks & after care are just as important as bonding treatments.
by AJS Verified Purchase
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Made a difference
This is great on really wet hair, blow drying is far easier and less breakage. Highly recommend this brand, smells great and hair feels smooth, even the ends.
by Angela Verified Purchase
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All round winner
I love this heat spray, it's so lightweight and feels like it actually protects my hair against damage! Plus it smells incredible
by Lizzie
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Obsessed with this product range!
I have tried quite a lot of hair strengthening products since my hair is naturally thin and I want it to be as strong as possible. It's great for thin and oily hair, my hair feels clean for a longer time and now I don't need to wash it daily. This spray is fantastic to untangle hair without weighing it down or leaving a greasy feeling. The hair is also more protected if blow-drying - the ends stay nourished much longer. The smell felt quite strong the first couple of times I used it (I used the shampoo and the conditioner too) but then I got used to it. It smells really nice but I was used to haircare with softer fragrances. I definitely recommend it along with the shampoo and conditioner - the best I have tried in a long time.
by Raquel
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In love with Genesis defence thermique serum!
I've been using this serum for a couple of weeks now and I absolutely love it! Unfortunately I got to try the travel size however, from the first time I used it my hair smell fantastic and looked fabulous. It provides anti-breakage protection and immediate hydration. Protects from heat up to 220°. So you can still style your hair avoiding the harmful effect of overheating.
by Ellie (Incentivised through Hair.com)
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Kérastase Genesis Defense Thermique Review
The Kérastase Genesis Defense Thermique is amazing first of all I love the spray bottle which enables me to use enough product and not too much. When sprayed onto your hair it's kind of like a protective layer that has coated your hair locks which gives a shiny, healthy glow appearance. I love that after a blow dry it causes less damage and protects it from heat too. It even looks healthy which is another bonus.
by SamKh (Incentivised through Hair.com)
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