Kérastase Genesis Sérum Anti-Chute Fortifiant is a daily leave-in scalp serum for weakened hair prone to falling due to breakage. Powered by Aminexil, it anchors the hair fibre at the root and reinforces the scalp — the targeted daily step in the Genesis anti hair-fall routine.

Benefits
  • Reduces hair fall due to breakage — significant efficacy after 6 weeks of use (clinical study, 99 people).
  • Anchors hair at the root — improves resistance and resilience.
  • Soothes the scalp — reduces itchiness and discomfort after 3 weeks.
  • Non-drip jelly texture — for precise, targeted scalp application.
How to use
  1. Use once daily for a 6-week course, on a dry or towel-dried scalp.
  2. Apply section by section, up to 4 doses (one full pipette each), and massage in with fingertips.
  3. Do not rinse, then style as usual. As part of the full Genesis system: up to 84% less hair fall due to breakage.
Who it's for

For weakened hair that's thinning or prone to falling through breakage, and scalps that feel uncomfortable. A daily scalp step alongside the Genesis shampoo and conditioner — see the full Kérastase range.

Key actives
  • Aminexil — reinforces hair anchoring at the root to reduce fall.
  • Edelweiss Native Cells and Ginger Root — strengthen the hair fibre.
  • Supporting actives — caffeine, arginine, niacinamide, resveratrol and tocopherol.
The Genesis routine

Cleanse with a Genesis shampoo, Bain Hydra-Fortifiant for fine to normal hair that gets oily at the roots, or Bain Nutri-Fortifiant for drier hair. Condition with Genesis Fondant, then apply this serum to the scalp every day. Used as the full Genesis system, the range gives up to 84% less hair fall due to breakage (instrumental brushing test vs a non-conditioning shampoo). Shop the full Kérastase Genesis range.

Is Genesis right for you?

Genesis targets hair fall caused by breakage of weakened hair, for example from brushing or styling. It isn't designed for hair loss that starts at the scalp or follicle; for that, look at Kérastase Spécifique. If your hair loss is sudden or ongoing, speak to a doctor.

FAQs

How do I use Kérastase Genesis serum?
Once a day for a 6-week course. On a dry or towel-dried scalp, apply up to 4 doses (one full pipette each) section by section and massage in. Don't rinse; style as usual.

How long until I see results?
In a clinical study of 99 people, there was a significant reduction in hair fall due to breakage after 6 weeks of daily use, and less scalp itchiness and discomfort after 3 weeks.

Does it treat hair loss?
It targets hair fall caused by breakage of weakened hair. It is not a medical hair-loss treatment, so see a doctor if hair loss is sudden or persistent.

What should I use it with?
A Genesis shampoo and the Genesis Fondant conditioner. Used together as the full system, there is up to 84% less hair fall due to breakage.

Specifications

Brand
Kérastase
Size
90ml
Format
Serum
Hair concerns
Hair Loss, Breakage, Weak Hair, Thinning, Itchy Scalp
Suitable for
All hair types
Key ingredients
Glycerin
Finish
Shiny

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From the Partners Hair team
Kérastase Genesis Sérum Anti-Chute Fortifiant is a daily leave-in scalp serum for weakened hair prone to falling due to breakage. Powered by Aminexil, it anchors the hair fibre at the root and reinforces the scalp — a targeted daily step in the Genesis anti hair-fall routine.

Best for: weakened hair with increased fall from brushing, styling or breakage; a daily strengthening routine; scalp discomfort or itchiness.
Less suited to: those wanting a rinse-out product (this is leave-in, do not rinse); hair loss originating from the scalp or follicle — Genesis targets breakage, not medical hair loss (see Kérastase Spécifique).

Key actives:
- Aminexil — reinforces hair anchoring at the root, reduces fall
- Edelweiss Native Cells and Ginger Root — strengthen the fibre
- Supporting actives: Caffeine, Arginine, Niacinamide, Resveratrol, Tocopherol

Benefits:
- Reduces hair fall due to breakage — significant efficacy after 6 weeks of use (clinical study, 99 people)
- Used as part of the full Genesis system: up to 84% less hair fall due to breakage (instrumental brushing test vs non-conditioning shampoo)
- Anchors the hair fibre at the root
- Soothes scalp discomfort and itchiness (after 3 weeks)
- Reinforces the scalp's natural protective barrier
- Lightweight jelly texture for targeted, non-drip scalp application

How to use: Once daily over a 6-week period. Apply to dry or towel-dried scalp section by section, up to 4 doses (one dose = one full pipette). Massage in with fingertips. Do not rinse. Style as usual.

Format: 90ml leave-in scalp serum.

Authorised Kérastase stockist — 100% authentic, sourced from the official South African distributor. Free delivery on orders over R390 across South Africa.
Delivery without the guesswork

Spend R390 and delivery is on us. Orders under R390 are delivered for R67. We normally pack within 1 working day, with delivery in 2–5 working days depending on your location.

Changed your mind? You have 7 days after receiving your order to request a return. Email hello@partnershair.co.za to get started.

Why shop it at Partners Hair

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Customer Reviews

Overall rating: 5.0 / 5 from 7 reviews.