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KérastaseGenesis Défense Thermique Blow Dry Primer
Anti hair-fall fortifying blow-dry fluid for weakened hair, prone to falling due to breakage. This milky formula provides anti-breakage protection and optimal hydration without frizz or weighing down the hair.
Enriched with the combination of Edelweiss Native Cells and Ginger Root, Defense Thermique hydrates, reinforces and protects the hair from heat up to 220°C to reduce the risk of hair-fall due to breakage;Hair is shiny and soft with a silky touch.
Enriched with the combination of Edelweiss Native Cells and Ginger Root, Defense Thermique hydrates, reinforces and protects the hair from heat up to 220°C to reduce the risk of hair-fall due to breakage;Hair is shiny and soft with a silky touch.
Directions
ON TOWEL-DRIED HAIR: Take 2 to 4 pumps, depending on the lengths and thickness of the hair. Spread down to tips, then comb to evenly distribute the product. Proceed to blow-dry or air dry.
ON DRY HAIR: Apply to dry hair after blowdrying or airdrying as a finishing touch to tame frizz and boost shine. Style as desired.
Pro Tip: Use this fortifying blow-dry fluid before using heating tools to protect from heat up to 220°C or on dry hair to tame frizz and soften the hair.
Ingredients
1227736 E - 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 • HYDROLYZED VEGETABLE PROTEIN PG-PROPYL SILANETRIOL • GLYCERIN • BENZYL SALICYLATE • COUMARIN • ZINGIBER OFFICINALE ROOT EXTRACT / GINGER ROOT EXTRACT • CITRAL • BENZYL ALCOHOL • CITRONELLOL • BENZYL BENZOATE • LEONTOPODIUM ALPINUM CALLUS CULTURE EXTRACT • SODIUM BENZOATE • POTASSIUM SORBATE • TOCOPHEROL • CITRIC ACID • XANTHAN GUM • DIPEPTIDE DIAMINOBUTYROYL BENZYLAMIDE DIACETATE • PARFUM / FRAGRANCE (F.I.L. N70015760/1).
This list of ingredients may be subject to change, please consult the packaging of the product purchased.
+Offer
FREE Nutritive 8H Serum 30ml, when you spend £50 on Kérastase.*
Nourish your hair with the Kérastase Nutritive 8H Magic Night Repair Serum. An intensive nourishing overnight serum which conditions your hair while you sleep for long lasting nourishment.
*One free gift per order. Valid until the 21st December or whilst stock lasts. Your free gift will automatically add to the shopping bag page. Total at order summary must be £50 or more worth of Kérastase products, after any Promotion Code, Brands You Love discount and before delivery charges are applied. Cannot be used in conjunction with any other Promotion and this offer is not applicable to previously made or pending purchases. Excludes Gift Voucher, Sephora Favourites Advent Calendar and Fragrance Gift Box purchases. This offer is available online at Sephora.co.uk to UK Mainland customers only.
+Offer
FREE Genesis Bain Shampoo 80ml, when you spend £76 on Kérastase.*
Discover Kérastase Genesis Bain Hydra-Fortifiant Shampoo, an anti hair-fall fortifying shampoo for weakened hair, prone to falling.
*One free gift per order. Valid until the 21st December or whilst stock lasts. Your free gift will automatically add to the shopping bag page. Total at order summary must be £76 or more worth of Kérastase products, after any Promotion Code, Brands You Love discount and before delivery charges are applied. Cannot be used in conjunction with any other Promotion and this offer is not applicable to previously made or pending purchases. Excludes Gift Voucher, Sephora Favourites Advent Calendar and Fragrance Gift Box purchases. This offer is available online at Sephora.co.uk to UK Mainland customers only.
+Offer
FREE Genesis Masque Reconstituant 30ml, when you spend £76 on Kérastase.*
An anti hair-fall intense fortifying mask for weakened hair, prone to falling.
*One free gift per order. Valid until 21st December or whilst stock lasts. Your free gift will automatically add to the shopping bag page. Total at order summary must be £76 or more worth of Kérastase products, after any Promotion Code, Brands You Love discount and before delivery charges are applied. Cannot be used in conjunction with any other Promotion and this offer is not applicable to previously made or pending purchases. Excludes Gift Voucher, Sephora Favourites Advent Calendar and Fragrance Gift Box purchases. This offer is available online at Sephora.co.uk to UK Mainland customers only.
See more...
Rated 3 out of
5
by
Helan from
Could be better
Smells good , however Im not sure it doesn’t really do much in terms of heat protecting , it could be better and also dries out my hair :(
Date published: 2025-11-30
Rated 5 out of
5
by
Hollyg from
Perfect
[This review was collected as part of a promotion.] Hair feels softer, doesn’t weight it down when you put it in
Easier to get my hairbrush through my hair
Date published: 2025-11-27
Rated 3 out of
5
by
Ashl from
Changed formula?
I’ve been using the genesis range for a year, after experiencing significant seasonal hair fall last autumn. It worked wonders at the time but now my hair is feeling really dry and frizzy, and cannot hold a style. I washed and dried without using this spray recently as I was having my hair put up for a wedding, and it did blow dry much easier, so I’m not sure if it’s the spray that’s contributing towards the dryness. It was out of stock for a while so I’m wondering if the formula has changed?
Going to switch to a moisturising range for a while and hope that makes a difference! A shame, as I’ve recommended the range to lots of friends, but my hair is just so parched right now it needs a change!
Date published: 2025-11-04
Rated 3 out of
5
by
Samira from
Good lightweight protection but annoying nozzle
I like the Kérastase Genesis Défense Thermique. It feels really lightweight and doesn’t leave any residue, which I love. The only downside is the nozzle, it’s a bit awkward to use and makes it hard to spray evenly. Otherwise a good heat protectant.
Date published: 2025-11-02
Rated 5 out of
5
by
Jordan from
Perfect for brittle hair
Makes my hair feel so soft and silky after use!
The spray bottle can on occasion get stuck but for how good the product is it’s not really a problem for me!
For reference I have been healing damaged and thinning hair that had a serious breakage problem however since using this my hair has been silky soft with minimal breakage
Date published: 2025-10-25
Rated 5 out of
5
by
Alina from
Amazing
I love to use this on my wet hair after washing. It detangles and leaves it super soft.
Date published: 2025-06-09
Rated 4 out of
5
by
Leia from
Nice
Heat protectors can be heavy and weight the hair down, but genesis defence detangle, provides some level of heat protection and remains light weight. Will buy again.
Date published: 2025-05-03
Rated 5 out of
5
by
Abdo from
Heat protection
It’s good to use before straightener it prevents damage to your hair and the smell is incredible
Date published: 2025-03-29
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