KÉRASTASE Genesis Strengthening Hair Serum 1 fl oz — Silicone-Free, Anti-Breakage Daily Treatment

KÉRASTASE Genesis Hair Serum is a daily, silicone-free strengthening treatment formulated with ginger, caffeine, and arginine to reduce breakage and reinforce weak hair.

This lightweight serum targets strands and the scalp to help reduce hair loss caused by breakage from brushing while leaving no heavy residue. Designed for normal to dry, weakened hair, it can be applied to specific thinning areas and used alongside other products from the KÉRASTASE Genesis range for a full care routine.

How quickly will I notice reduced breakage when using this serum?

Many users report measurable reduction in hair fall from brushing after regular application over several weeks. Results depend on hair condition and consistency of use; the formula supports hair resistance rather than providing instant regrowth.

• Apply twice daily (morning or evening) for at least six weeks for visible improvement.
• Use four doses, sectioning the scalp for targeted coverage.
• Massage to distribute; do not rinse to let actives work overnight or all day.

What are the key ingredients and what do they do for my hair?

The serum blends ginger and caffeine to invigorate the scalp and arginine to support circulation around the hair root. These ingredients are combined in a silicone-free base so hair feels light while strands gain reinforcement.

• Ginger — soothes and contributes to scalp comfort and resilience.
• Caffeine — helps stimulate the scalp environment for stronger-looking hair.
• Arginine — an amino acid that supports healthy root circulation and can target less dense areas.

How do I incorporate this serum into my daily routine?

Use it on dry or towel-dried scalp, section by section, applying four doses and massaging each area for even absorption. The serum is leave-in, so you can style as usual after application.

• Apply on clean, dry or towel-dried scalp; do not rinse out.
• Can be used morning or night depending on your schedule.
• Pair with Genesis shampoo, conditioner, and primer for a comprehensive regimen.

Will this serum make my hair feel greasy or heavy?

No — the formula is engineered to be lightweight and non-greasy, designed not to leave visible residue on strands. It focuses on strengthening without weighing hair down, making it suitable for targeted use where density is reduced.

• Silicone-free texture for a natural finish.
• Light formulation avoids buildup with regular use.
• Ideal for spot treatment on thinning zones without saturating all hair.

Who is this for: KÉRASTASE Genesis Hair Serum is aimed at people with weakened, brittle hair seeking to reduce breakage during brushing and reinforce strands without heavy silicones. It’s a targeted add-on for anyone noticing breakage or localized thinning and who wants a leave-in, lightweight solution to support a stronger-looking mane when used consistently and alongside complementary Genesis products.