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Kérastase

Genesis Strengthening Scalp and Hair Serum

4.1 · 1043 reviews
7,009 ₽

What it is: A silicone-free, lightweight scalp and hair serum that delivers intensely strengthening care to reduce breakage for weak hair.Hair Texture: Straight, Wavy, and CurlyHair Type: Fine, Medium, and ThickHair Concerns:- Volumizing- Damage/Split Ends/Breakage- ThinningKey Benefits:  - Strengthens Hair Weakened by Heat and Brushing - Hydrates Hair and Adds Shine - Has a Lightweight, Non-Greasy Finish Highlighted Ingredients: Edelweiss Native Cells, Ginger Root, Arginine, and Caffeine. What Else You Need to Know: Breakage is a primary contributor to hair fall, occurring when hair is weakened by daily aggressors, including heat, brushing, and over-styling. Enriched with fortifying ingredients, ginger and caffeine, this non-greasy, silicone-free serum strengthens weakened strands by nourishing and reinforcing hair to address hair fall caused by breakage from brushing.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 using a system of Genesis Strengthening Shampoo for Normal to Oily Hair, Genesis Strengthening Conditioner, and Genesis Strengthening Serum for Hair and Scalp vs. a non-conditioning shampoo, results showed:  -98% less breakage -97% less hair fall due to breakage from brushing

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What it is: A silicone-free, lightweight scalp and hair serum that delivers intensely strengthening care to reduce breakage for weak hair.Hair Texture: Straight, Wavy, and CurlyHair Type: Fine, Medium, and ThickHair Concerns:- Volumizing- Damage/Split Ends/Breakage- ThinningKey Benefits:  - Strengthens Hair Weakened by Heat and Brushing - Hydrates Hair and Adds Shine - Has a Lightweight, Non-Greasy Finish Highlighted Ingredients: Edelweiss Native Cells, Ginger Root, Arginine, and Caffeine. What Else You Need to Know: Breakage is a primary contributor to hair fall, occurring when hair is weakened by daily aggressors, including heat, brushing, and over-styling. Enriched with fortifying ingredients, ginger and caffeine, this non-greasy, silicone-free serum strengthens weakened strands by nourishing and reinforcing hair to address hair fall caused by breakage from brushing.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 using a system of Genesis Strengthening Shampoo for Normal to Oily Hair, Genesis Strengthening Conditioner, and Genesis Strengthening Serum for Hair and Scalp vs. a non-conditioning shampoo, results showed:  -98% less breakage -97% less hair fall due to breakage from brushing

Customer reviews

4.0
verified purchase
Excited to get results

i just started using this less than a month ago. It was recommended that I give it a try for my post GLP-1 hair shedding. I've been aggressively using it daily and I can say I love the smell. But slowly seeing small results. Will plan to continue for a few months to get my hair where I really need it to be!

9/14/2026
5.0
verified purchase
I LOVE IT!!!

I used for one month and definitely worked, I love it

9/13/2026
1.0
verified purchase
Does NOT contain AMINEXIL

This US version of this product Does Not have the active ingredients to prevent hair loss l .. therefore this is useless (get the uk version)

9/11/2026
5.0
verified purchase
A Game Changer for Hair Growth & Strength!

Love this serum! It feels lightweight on my scalp and doesn’t leave my hair greasy. My hair feels stronger, healthier, and looks fuller with regular use. I also love how fresh and luxurious it feels. Definitely a product I would repurchase!

9/2/2026
4.0
verified purchase
A MUST TRY ✨

This product feels light-weight & it smells great!

9/1/2026
3.0
verified purchase
Works well for dry scalp

It smells light , the serum is not super thick, it made my scalp feel re freshed and did not make my roots look greasy

8/18/2026
5.0
verified purchase

I honestly so sad it worked because now i have to keep buying it. I’m on my second bottle. Curly hair 3b/3c hair was thinning, lack of density, so i kept it slicked back which caused more thinning. Really reduces hair fall out in the shower

8/14/2026
5.0
verified purchase

This product is fantastic, stops almost immediately hair fall you just have to keep using it after every wash (every 2-3 days) and it has reduced my hair fall significantly in the shower and when brushing. Love it!

8/4/2026
4.0
verified purchase
Great product, poor value

I love this product and I see slight improvement in my hair and scalp but I’ve only had it for 3 weeks and the bottle is near empty. Given it says it to use consistently for 6 weeks to see effectiveness, I think there should be enough product to last 6 weeks

7/27/2026
5.0
verified purchase
Gives strong support!

I don’t know how many times I’ve purchased this hair serum. I know I’ve been using it for 2 years now, but I never left a review. I love it! It makes my hair feel so strong and well-held. My scalp feels healthy, with no grease at all. I also love the scent because it makes my hair smell good!

7/15/2026