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The Genesis Défense Thermique Blow-dry Primer helps prevent split ends with its ultra-strengthening formula equipped with anti-breakage action and heat protection up to 230°C. Enriched with Edelweiss Native Cells and Ginger Root, this dry hair heat protectant detangles hair, boosts shine and an irresistible silk-to-touch finish with its 24H hydrating shield against frizz.
Country Of Origin:- Spain.
Manufacturer & Packer Name and Address:- L’Oréal S.A, Productos Capilares, Calle López Bravo, 78, Polígono Industrial Villalonquéjar, 09001 Burgos, Spain.
Importer name and Address:- L'Oréal India Pvt Ltd, A Wing, 8th Floor, Marathon Futurex, N M Joshi Marg, Lower Parel, Mumbai, India, 400013.
Expiry - February-2026
The Genesis Défense Thermique Blow-dry Primer helps prevent split ends with its ultra-strengthening formula equipped with anti-breakage action and heat protection up to 230°C. Enriched with Edelweiss Native Cells and Ginger Root, this dry hair heat protectant detangles hair, boosts shine and an irresistible silk-to-touch finish with its 24H hydrating shield against frizz.
Country Of Origin:- Spain.
Manufacturer & Packer Name and Address:- L’Oréal S.A, Productos Capilares, Calle López Bravo, 78, Polígono Industrial Villalonquéjar, 09001 Burgos, Spain.
Importer name and Address:- L'Oréal India Pvt Ltd, A Wing, 8th Floor, Marathon Futurex, N M Joshi Marg, Lower Parel, Mumbai, India, 400013.
Expiry - February-2026
Reduces Breakage
Heat Protectant
Detangles Hair
Seals Split Ends
✔ Heat Protection Upto 230°
✔ 24H Hydrating Shield Against Frizz
✔ Detangles Hair and Boosts Shine
Step 1: Apply 2-4 pumps of this Kérastase heat protectant on dry or towel-dried hair.
Step 2: Distribute this heat protectant evenly.
Step 3: Blow dry hair for added volume or allow lengths to air dry for a natural finish.
In case of contact with eyes, rinse them immediately and thoroughly.
Benefits
Product Benefits
Reduces Breakage
Heat Protectant
Detangles Hair
Seals Split Ends
✔ Heat Protection Upto 230°
✔ 24H Hydrating Shield Against Frizz
✔ Detangles Hair and Boosts Shine
BEFORE / AFTER
See results on different hair types.
Illustration of the contemplated results obtained after applying:
Genesis dual action fortifying system is formulated to strengthen hair and reduce hair breakage.
Enriched with a potent combination of Edelweiss Native Cells and Ginger Root, it strengthens the fiber for intense resilience to reduce the risk of hair fall.
#NeverBeAfraidOfFalling
Ginger Root Extract
Protects hair against daily external aggressors.
Edelweiss Native Cells
Shields and hydrates the fibre, reduces hair fall from breakage. Helps hair resist the most extreme conditions.
The Genesis fragrance is an invigorating blend of woody citrus notes. Fresh lime and bergamot zest opens the scent, followed by the soothing aroma of rose, and finally, the grounding depth of vetiver.
This captivating combination captures the essence of the outdoors, offering a revitalizing and empowering experience for your hair and senses.
Kérastase has been committed to a beauty without animal testing for more than 30 years
94% Natural Origin
Made in a factory using 100% Renewable Energy*
*In the previous calendar year. Find more information in the L'Oréal Universal Registration
No Rinse Formula
Parabens Free
Science
SCIENCE
GENESIS
Dual Anti-Fall Action Haircare
Genesis dual action fortifying system is formulated to strengthen hair and reduce hair breakage.
Enriched with a potent combination of Edelweiss Native Cells and Ginger Root, it strengthens the fiber for intense resilience to reduce the risk of hair fall.
#NeverBeAfraidOfFalling
KEY INGREDIENTS
Ginger Root Extract
Protects hair against daily external aggressors.
Edelweiss Native Cells
Shields and hydrates the fibre, reduces hair fall from breakage. Helps hair resist the most extreme conditions.
The Genesis fragrance is an invigorating blend of woody citrus notes. Fresh lime and bergamot zest opens the scent, followed by the soothing aroma of rose, and finally, the grounding depth of vetiver.
This captivating combination captures the essence of the outdoors, offering a revitalizing and empowering experience for your hair and senses.
Eco Stamps SVG + Tag
Kérastase has been committed to a beauty without animal testing for more than 30 years
94% Natural Origin
Made in a factory using 100% Renewable Energy*
*In the previous calendar year. Find more information in the L'Oréal Universal Registration
No Rinse Formula
Parabens Free
Reals
THEY TRIED IT, THEY LOVED IT
Stronger Hair, Stronger Stories. See Genesis in action. #NeverBeAfraidOfFalling
THEY TRIED IT, THEY LOVED IT
Stronger Hair, Stronger Stories. See Genesis in action. #NeverBeAfraidOfFalling
PDP Section FAQs
FREQUENTLY ASKED QUESTIONS
Should I use Genesis Defense Thermique Blow Dry Primer on wet or dry hair?
While we recommend using Kérastase heat protectant on damp hair, it can also be used on dry hair before applying heat styling tools.
Will Defense Thermique Blow Dry Primer weigh my hair down?
No, Defense Thermique Blow Dry Primer is light enough to leave hair with no weigh down while also leaving it silky and shiny. This also makes it the best blow dry primer for your hair.
What’s the best way to use Genesis Defense Thermique Blow Dry Primer?
Spray Kérastase heat protectant into palms and work product from the nape towards the front hairline. Blow dry hair 50% and spray a light mist of product over ends and finish styling.
What is the difference between Resistance and Genesis range?
Genesis offers a dual benefit for women experiencing hair-fall: reducing hair-fall from the roots and hair-fall from breakage. Resistance is for damaged to very damaged hair from chemical aggression.
Should I rinse my hair after using the Genesis Defense Thermique Blow Dry Primer?
No, you do not need to rinse your hair after applying this dry hair heat protectant. You can directly blow dry or style your hair as usual after using it.
PDP Section Routine Carousel
COMPLETE YOUR ROUTINE
GENESIS
At Kérastase, we believe in the power of unique experiences. Discover the products of this range and maximize your results!
Rated 4 out of
5 by
Rituka from
Blow dry reviewGood product! Seems to be doing its job and helping bond and hair fall. I wish it wasn’t this heavy on fragrance
Date published: 2025-08-01
Rated 5 out of
5 by
Anonymous from
Happy hairIt’s a great product for hair keeps hair fall away and healthy also acts well as a heat protector
Date published: 2024-08-08
Rated 1 out of
5 by
Lumos04 from
Big fan of Kerastese but this really disappointedI brought this about 3 weeks ago and I wash my hair on alternate days cuz I live in a really humid climate hence need to blowdry it pretty often. My natural hair texture is straight , fine, frizz free and here’s my experience so far-
a) smells terrible too too strong gives me a headache honestly like a cheap men’s perfume
b) feels heavy in the sense that it gives me really bad buildup
So in totality it really doesn’t do much for my hair if not make it a huge hassle to deal with instead.
Date published: 2024-03-22
Rated 4 out of
5 by
Purabi from
Smells divine and feels nourishingThis thermique is nourishing and moisturising. I like it on non humid days ! Please ensure the product is sealed well when sending it to us. There was a minor spillage when it arrived! But it’s a great product !