WEAKENED HAIR

Genesis Defense Thermique Heat Protecting Spray

Lightweight leave-in spray to strengthen, heat protect, and prevent breakage for weakened hair.

Average rating includes incentivized reviews

Bestseller

Kerastase

Genesis Defense Thermique Heat Protecting Spray

Lightweight leave-in spray to strengthen, heat protect, and prevent breakage for weakened hair.

One size only

150 ml

Old price New price $50.00

Quantity

or 4 installments of $12.50 by

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Pairs best with

Genesis Serum Fortifiant Hair Serum

Professional-grade daily scalp serum that strengthens hair from the root to prevent breakage from brushing. Salon-quality fortifying treatment for at-home use.

EXCLUSIVE OFFER Complimentary Sample Trio with $65+ orders
Code: SERUM
LEARN MORE

FIND YOUR ROUTINE

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Get to Know the Product

Kerastase Genesis haircare collection for stronger hair and less hairfall due to brushing

NEVER BE AFRAID OF FALLING.

The Genesis collection is professionally formulated to strengthen hair & reduce hair breakage.
97% LESS HAIR FALL DUE TO BREAKAGE FROM BRUSHING*
+89% MORE NOURISHED HAIR**

Genesis Defense Thermique Heat Protecting Spray by Kérastase is a heat-protectant leave-in spray that strengthens hair and helps to prevent split ends, while providing up to 24 hours of frizz protection.

To maximize the results, combine with the rest of the Genesis range

*System of Bain Hydra-Fortifiant + Fondant Renforçateur+ Sérum Fortifiant vs Non-Conditioning Shampoo **vs. non-conditioning shampoo.

Product Benefits

BENEFITS

Kérastase Genesis anti hair fall haircare

Reduces breakage

Kérastase Genesis anti hair fall haircare

Strengthens hair

Kérastase Genesis anti hair fall haircare

Nourishing

Kérastase Genesis anti hair fall haircare

Healthy Hair

Lightweight leave-in spray to strengthen, heat protect, and prevent breakage for weakened hair.

Leaves hair shiny and silky
Helps to prevent split ends
Protects Against Heat Styling
88% more smooth/conditioned**
Delivers Up to 24 Hours of Frizz Protection
Strengthens Hair Weakened from Brushing and Over-Styling
Awarded Prevention Beauty Awards Best Heat Protectant 2023

Genesis is not a hair loss product.
*vs. non-conditioning shampoo. **vs. non-conditioning shampoo.

HOW TO USE

Apply on wet lengths.
Blow dry.

In case of contact with eyes, rinse them immediately and thoroughly.

I absolutely LOVE this! It's a thermique in a spray form! After just a few sprays it leaves the hair easier to detangle and calms down frizz. It's also a heat protectant!

Ashley Sandgren | @chic_cheveux | PR at Partners, Gainesville, VA

SCIENCE

DUAL-ACTION FORTIFYING SYSTEM

Enriched with a potent combination of Edelweiss Native Cells and Ginger Root

GINGER ROOT EXTRACT
Protects hair against daily external aggressors

CAFFEINE
Helps improve scalp micro-circulation thanks to its stimulating properties.

ARGININE
This amino-acid has strong affinity to the hair's surface, making it the perfect ally to weakened hair

WHAT'S INSIDE

FRAGRANCES

SUBLIMATION OF A WOODY CITRUS

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.

TOP NOTES

Lime, Bergamot Zest & Cedrat

HEART NOTES

Rose, Bergamot Flower & Basil

BASE NOTES

Vetiver, Musk & Tonka Bean

TOP NOTES

Lime, Bergamot Zest & Cedrat

HEART NOTES

Rose, Bergamot Flower & Basil

BASE NOTES

Vetiver, Musk & Tonka Bean

KEY INGREDIENTS

DUAL-ACTION FORTIFYING SYSTEM

Enriched with a potent combination of Edelweiss Native Cells and Ginger Root

Kerastase Ingredients Ginger root

GINGER ROOT EXTRACT

Protects hair against daily external aggressors

Kerastase Ingredients Caffeine

CAFFEINE

Helps improve scalp micro-circulation thanks to its stimulating properties.

Kerastase Ingredients Arginine

ARGININE

This amino-acid has strong affinity to the hair's surface, making it the perfect ally to weakened hair

GINGER ROOT EXTRACT

Protects hair against daily external aggressors

CAFFEINE

Protects hair against daily external aggressors

ARGININE

This amino-acid has strong affinity to the hair's surface, making it the perfect ally to weakened hair

WHAT'S INSIDE

FRAGRANCES

SUBLIMATION OF A WOODY CITRUS

TOP NOTES

Lime, Bergamot Zest & Cedrat

HEART NOTES

Rose, Bergamot Flower & Basil

BASE NOTES

Vetiver, Musk & Tonka Bean

TOP NOTES

Lime, Bergamot Zest & Cedrat

HEART NOTES

Rose, Bergamot Flower & Basil

BASE NOTES

Vetiver, Musk & Tonka Bean

KEY INGREDIENTS

DUAL-ACTION FORTIFYING SYSTEM

Enriched with a potent combination of Edelweiss Native Cells and Ginger Root

Kerastase Ingredients Ginger root

GINGER ROOT EXTRACT

Protects hair against daily external aggressors

Kerastase Ingredients Caffeine

CAFFEINE

Helps improve scalp micro-circulation thanks to its stimulating properties.

Kerastase Ingredients Arginine

ARGININE

This amino-acid has strong affinity to the hair's surface, making it the perfect ally to weakened hair

GINGER ROOT EXTRACT

Protects hair against daily external aggressors

CAFFEINE

Protects hair against daily external aggressors

ARGININE

This amino-acid has strong affinity to the hair's surface, making it the perfect ally to weakened hair

Frequently Asked Questions

FAQ

What is the fragrance in Defense Thermique Blow Dry Primer? What is the fragrance in Defense Thermique Blow Dry Primer?

Should I use Defense Thermique Blow Dry Primer on wet or dry hair? Should I use Defense Thermique Blow Dry Primer on wet or dry hair?

What is the difference between Resistance and Genesis range? What is the difference between Resistance and Genesis range?

Will Defense Thermique Blow Dry Primer weight my hair down? Will Defense Thermique Blow Dry Primer weight my hair down?

What’s the best way to use Defense Thermique Blow Dry Primer? What’s the best way to use Defense Thermique Blow Dry Primer?

THEY TRIED IT, THEY LOVED IT

Stronger Hair, Stronger Stories. See Genesis in action. #NeverBeAfraidOfFalling @kerastaseofficial

GENESIS

DUAL-ACTION FORTIFYING HAIRCARE.
MORE STRENGTH. LESS BREAKAGE.

97% LESS HAIR FALL DUE TO BREAKAGE FROM BRUSHING*
+89% MORE NOURISHED HAIR**

DISCOVER THE COLLECTION

*System of Bain Hydra-Fortifiant + Fondant Renforçateur+ Sérum Fortifiant vs Non-Conditioning Shampoo **vs. non-conditioning shampoo.

Complete Your Routine

At Kérastase, we believe in the power of a complete haircare routine. Discover the products of this range and maximize your results.

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Delicate fortifying shampoo for normal to oily, weakened hair that is prone to falling due to breakage from brushing.

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Lightweight fortifying conditioner for weakened hair that is prone to falling due to breakage from brushing. For daily use.

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Intense fortifying hair mask for weakened hair that is prone to falling due to breakage from brushing. For weekly use.

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Kerastase Genesis Serum Fortifiant Hair Serum For Hair Loss

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Professional-grade daily scalp serum that strengthens hair from the root to prevent breakage from brushing. Salon-quality fortifying treatment for at-home use.

Genesis Defense Thermique Heat Protecting Spray

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