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Kérastase

Genesis Heat Protecting Leave-In Treatment for Weakened Hair

4.5 · 767 reviews
5,522 ₽

What it 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.Hair Type: Fine, Medium, and ThickHair Texture: Straight, Wavy, and CurlyHair Concerns:- Heat Protection- Damage/Split Ends/Breakage- FrizzKey Benefits:  - Protects Against Heat Styling - Delivers Up to 24 Hours of Frizz Protection - Strengthens Hair Weakened from Brushing and Over-Styling Highlighted Ingredients: Edelweiss Native Cells and Ginger Root.Ingredient Callouts: Free of sulfates SLS & SLES. What Else You Need to Know: A primary contributor to hair fall, breakage occurs when hair is weakened by daily aggressors, including heat, brushing, and over-styling. This leave-in spray protects against heat up to 450 °F and strengthens weakened hair. It provides 24 hours of frizz protection, even in humid conditions, and helps to prevent split ends. It’s recommended by stylists as the perfect addition to any healthy hair care routine, and it delivers long-lasting frizz protection.Fragrance Description: The bright, invigorating scent unfolds with top notes of bergamot zest, cedrat, and lime; base notes of basil, bergamot flower, and rose; and base notes of vetiver, musk, and tonka bean.  Clinical Results: In a controlled study, vs. a non-conditioning shampoo, results showed: - 99% less hair fall due to breakage - 88% of hair was smoother, more conditioned - 24-hour protection against frizz

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What it 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.Hair Type: Fine, Medium, and ThickHair Texture: Straight, Wavy, and CurlyHair Concerns:- Heat Protection- Damage/Split Ends/Breakage- FrizzKey Benefits:  - Protects Against Heat Styling - Delivers Up to 24 Hours of Frizz Protection - Strengthens Hair Weakened from Brushing and Over-Styling Highlighted Ingredients: Edelweiss Native Cells and Ginger Root.Ingredient Callouts: Free of sulfates SLS & SLES. What Else You Need to Know: A primary contributor to hair fall, breakage occurs when hair is weakened by daily aggressors, including heat, brushing, and over-styling. This leave-in spray protects against heat up to 450 °F and strengthens weakened hair. It provides 24 hours of frizz protection, even in humid conditions, and helps to prevent split ends. It’s recommended by stylists as the perfect addition to any healthy hair care routine, and it delivers long-lasting frizz protection.Fragrance Description: The bright, invigorating scent unfolds with top notes of bergamot zest, cedrat, and lime; base notes of basil, bergamot flower, and rose; and base notes of vetiver, musk, and tonka bean.  Clinical Results: In a controlled study, vs. a non-conditioning shampoo, results showed: - 99% less hair fall due to breakage - 88% of hair was smoother, more conditioned - 24-hour protection against frizz

Customer reviews

5.0
verified purchase
Worth the money

Not only is the smell amazing but the product itself works wonders. It’s not too heavy and it won’t make your hair greasy. Has done a great job so far reducing frizz and breakage when I blow my hair out.

6/9/2026
5.0
verified purchase
Love it!

The best product for my hair. Use it daily. My hair looks so healthy after using

5/27/2026
3.0
verified purchase

The product itself is great, but the bottle I received has a bad pump.

5/20/2026
4.0
verified purchase

SO GOOD. My hair has never felt better and healthier.

5/7/2026
5.0
verified purchase
YES

I have thick hair with long extensions and this stuff is amazing. It makes my hair less tangled and smoother. Highly recommend!!

4/17/2026
5.0
verified purchase
Buy

Really liked this product, it reduced frizz and really smoothed it out. Would get again.

9/9/2026
1.0
verified purchase
Yucky smell

This product unfortunately works very well, BUT the smell is horrendous. Extremely perfume-y and lingers in your hair. Returned

9/6/2026
5.0
verified purchase
keep repurchasing

This is my second time purchasing this product, and I’ve had a really good experience with it. It leaves my hair feeling soft and smelling really nice. I also feel like it provides good heat protection and it feels lightweight for fine hair as well. Would recommend.

6/30/2026
5.0
verified purchase
Dang it

Imagine my disappointment when the $50 product is amazing and works better than anything I’ve ever used. RIP my wallet but it’s worth it for shiny, smooth, frizz controlled hair

6/8/2026
2.0
verified purchase

Smell is really terrible, I have a migraine attack after using such a strong scent protector.

5/28/2026