Stronger hair starts at the scalp.
Kérastase Genesis Serum Fortifiant is a professional-strength daily scalp serum for weak, thinning and breakage-prone hair. This lightweight, silicone-free treatment works at the scalp to help strengthen hair from the root, reduce breakage from brushing and improve the resilience of fragile hair.
Ideal for hair weakened by brushing, heat styling, coloring, highlighting or chemical services, Genesis Serum Fortifiant delivers targeted strengthening without leaving the scalp or hair greasy, heavy or coated.
Why You'll Love It
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Helps deliver 97% less hair fall due to breakage from brushing when used as part of the Genesis system
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Helps strengthen weakened hair from the root
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Targets areas prone to breakage or lower density
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Helps improve hair's resistance to daily brushing and styling
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Lightweight, non-greasy formula
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Silicone-free
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No rinsing required
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Can be applied to dry or towel-dried scalp
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Ideal for color-treated, highlighted and chemically processed hair
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Precision dropper makes targeted scalp application easy
How to Use
Use once daily on a dry or towel-dried scalp.
Part the hair into sections and apply the serum directly to the scalp, concentrating on areas where you notice the most weakness, breakage or lower density.
Apply up to 4 doses total. One dose equals one pipette filled to the black dosage line.
Gently massage into the scalp to distribute and encourage absorption.
Do not rinse. Blow-dry, air-dry or style as usual.
3 Ways to Make Genesis Part of Your Routine
Daily Scalp Treatment – Apply once a day to help continuously strengthen weakened, breakage-prone hair.
Target Weak Areas – Focus application on areas where hair feels fragile, appears less dense or experiences the most breakage.
Between Washes – Genesis Serum Fortifiant can also be applied to a dry scalp on non-wash days, making it easy to maintain your strengthening routine every day.
Who Is It For?
Perfect for anyone concerned with:
Weak hair • Hair breakage • Hair fall from breakage • Fragile hair • Thinning-looking hair • Lower-density areas • Color-treated hair • Highlighted hair • Chemically processed hair • Heat-styled hair • Scalp care
Key Ingredients
Ginger Root Extract – Helps protect hair against daily external aggressors and environmental stressors.
Caffeine – Helps stimulate scalp micro-circulation as part of this professional-strength scalp formula.
Arginine – An amino acid with a strong affinity for the hair's surface that helps support weakened hair fibers.
Your Daily Strengthening Ritual
Think of Genesis Serum Fortifiant as daily targeted care for your scalp and weakened hair. Unlike traditional finishing serums that simply coat the hair, this lightweight treatment is applied directly to the scalp to target weakness where the hair begins.
For maximum anti-breakage results, pair it with your customized Kérastase Genesis haircare routine.
Kérastase Genesis Serum Fortifiant is the daily strengthening scalp serum for anyone looking to reduce breakage, reinforce fragile hair and support stronger, healthier-looking hair from root to ends.