An error occured on the server, please try later or contact the customer service
Help

Purchase options

Prices and payment are shown in GBP. International shipping costs are based on your items, shipping method and destination.

Change currency

There is only one currency available for your location: € - EUR

Change language

There is only one language available for your location: English

Main content

GENESIS ANTI HAIR-FALL FORTIFYING SERUM FOR WEAKENED HAIR

Daily anti hair-fall hair serum to reduce breakage and strengthen fragile hair strands in weakened hair prone to hair-fall. Enriched with Aminexil, Ginger Roots and Edelweiss native cells.
GENESIS ANTI HAIR-FALL FORTIFYING SERUM FOR WEAKENED HAIR is rated 4.4 out of 5 by 161.
  • y_2026, m_6, d_3, h_11
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.46
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_161
  • loc_en_GB, sid_KER_00050, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_kerastase-uk
  • bvseo_sdk, dw_cartridge, 18.2.0, p_sdk_3.2.0
  • CLOUD, getAggregateRating, 5ms
  • reviews, product
940 people recently viewed this product
BEST-SELLER
KER

GENESIS ANTI HAIR-FALL FORTIFYING SERUM FOR WEAKENED HAIR

Daily anti hair-fall hair serum to reduce breakage and strengthen fragile hair strands in weakened hair prone to hair-fall. Enriched with Aminexil, Ginger Roots and Edelweiss native cells.

Select a size
90ml
Old price New price £52.00 (£57.78/100 ml.)
, 1 of 2
Selected The product variation is out of stock, 30ml
Old price New price £23.50 (£78.33/100 ml.)
, 2 of 2
Elixir and premiere haircare products and genesis trio haircare set

UP TO 15% OFF HAIRCARE SETS*
Discover your perfect hair routine and bring the
salon experience home. USE CODE: ROUTINE
 Discover your perfect hair routine.
USE CODE: ROUTINE
 SHOP NOW

Emily Ratajkowski headshot for haircare diagnostic quiz

​HAIR DIAGNOSTIC
Discover the perfect haircare routine tailored
just for you in only 2 minutes.
START QUIZ

GENESIS COLLECTION

NEVER BE AFRAID OF FALLING.

Genesis Anti Hair-Fall Fortifying Serum is a daily anti hair-fall fortifying serum for weakened hair, prone to falling. The serum reduces hair-fall due to breakage by up to 84%*. ​

Use once daily in the morning or before going to bed during a 6-week period. Apply 3-4 doses on dry or towel-dried scalp, section by section. 1 dose = 1 pipette until the mark. Do not rinse. In case of contact with eyes, rinse them immediately and thoroughly.

UP TO 84% LESS HAIR-FALL DUE TO BREAKAGE*​
MORE FIBRE STRENGTH AND RESILIENCE**

*Brushing test: Bain Nutri-Fortifiant + Masque Reconstituant + Serum Anti-Chute Fortifiant vs Classical Shampoo​
*Clinical study- 99 people, 6 weeks use.

NEVER BE AFRAID OF FALLING.

Genesis Anti Hair-Fall Fortifying Serum is a daily anti hair-fall fortifying serum for weakened hair, prone to falling. The serum reduces hair-fall due to breakage by up to 84%*. ​

Use once daily in the morning or before going to bed during a 6-week period. Apply 3-4 doses on dry or towel-dried scalp, section by section. 1 dose = 1 pipette until the mark. Do not rinse. In case of contact with eyes, rinse them immediately and thoroughly.

UP TO 84% LESS HAIR-FALL DUE TO BREAKAGE*​
MORE FIBRE STRENGTH AND RESILIENCE**

*Brushing test: Bain Nutri-Fortifiant + Masque Reconstituant + Serum Anti-Chute Fortifiant vs Classical Shampoo​
*Clinical study- 99 people, 6 weeks use.

BENEFITS

breakages

Prevents Breakage

stronger

Fortifies Hair

Smooth Hair

Prevents Hair Fall

✔ Enriched with Edelweiss Native Cells, Ginger Root & Aminexil, to help reduce the risk of hair-fall due to breakage​
✔ Protects against external aggressors​​
✔ Helps reinforce and preserve the scalp’s natural protective barrier

UP TO 84% LESS HAIR-FALL DUE TO BREAKAGE*

*Brushing test: Bain Nutri-Fortifiant + Masque Reconstituant + Serum Anti-Chute Fortifiant vs Classical Shampoo

Step 1: Apply 3-4 doses on dry or towel-dried scalp, section by section. 1 dose = 1 pipette until the mark.

Step 2: Do not rinse.

In case of contact with eyes, rinse them immediately and thoroughly.

BENEFITS

breakages

Prevents Breakage

stronger

Fortifies Hair

Smooth Hair

Prevents Hair Fall

✔ Enriched with Edelweiss Native Cells, Ginger Root & Aminexil, to help reduce the risk of hair-fall due to breakage​
✔ Protects against external aggressors​​
✔ Helps reinforce and preserve the scalp’s natural protective barrier

UP TO 84% LESS HAIR-FALL DUE TO BREAKAGE*

*Brushing test: Bain Nutri-Fortifiant + Masque Reconstituant + Serum Anti-Chute Fortifiant vs Classical Shampoo

BEFORE / AFTER

Illustration of the expected results obtained after applying:

1. Bain Hydra-Fortifiant

2. Fondant Renforçateur

3. Défense Thermique

    GENESIS

    Dual Anti-Fall Action Haircare

    Genesis dual action fortifying system is formulated to strengthen hair and reduce hair breakage.

    Enriched with a potent combination of Edelweiss Native Cells and Ginger Root, it strengthens the fiber for intense resilience to reduce the risk of hair fall.

    #NeverBeAfraidOfFalling

    Image

    AMINEXIL
    Within the formula, it helps hair to anchor more solidly into the scalp and prevents collagen from hardening around the hair follicles.

    Image

    GINGER ROOT EXTRACT
    Within the formula, it helps to protect against daily external aggressors.

    Image

    CAFFEINE
    Within the formula, it helps to improve scalp micro-circulation, thanks to its stimulating properties.

      DELICIOUS BERGAMOT


      TOP NOTES
      LIME, BERGAMOT ZEST & CEDRAT


      HEART NOTES
      ROSE, BERGAMOT FLOWER & BASIL


      BASE NOTES
      VETIVER, MUSK & TONKA BEAN

        The Genesis fragrance is an invigorating blend of woody citrus notes. Fresh lime and bergamot zest opens the scent, followed by the soothing aroma of rose, and finally, the grounding depth of vetiver.
        This captivating combination captures the essence of the outdoors, offering a revitalising and empowering experience for your hair and senses.

        SCIENCE

        GENESIS

        Dual Anti-Fall Action Haircare

        Genesis dual action fortifying system is formulated to strengthen hair and reduce hair breakage.

        Enriched with a potent combination of Edelweiss Native Cells and Ginger Root, it strengthens the fiber for intense resilience to reduce the risk of hair fall.

        #NeverBeAfraidOfFalling

        KEY INGREDIENTS


        Image

        AMINEXIL
        Within the formula, it helps hair to anchor more solidly into the scalp and prevents collagen from hardening around the hair follicles.

        Image

        Ginger Root Extract
        Within the formula, it helps to protect against daily external aggressors.​

        Image

        Caffeine
        Within the formula, it helps to improve scalp micro-circulation, thanks to its stimulating properties.

          TOP NOTES

          LIME, BERGAMOT ZEST & CEDRAT

          HEART NOTES

          ROSE, BERGAMOT FLOWER & BASIL

          BASE NOTES

          VETIVER, MUSK & TONKA BEAN

          FRAGRANCE

          DELICIOUS BERGAMOT

          The Genesis fragrance is an invigorating blend of woody citrus notes. Fresh lime and bergamot zest opens the scent, followed by the soothing aroma of rose, and finally, the grounding depth of vetiver.
          This captivating combination captures the essence of the outdoors, offering a revitalising and empowering experience for your hair and senses.

          THEY TRIED IT, THEY LOVED IT

          Stronger Hair, Stronger Stories. See Genesis in action. #NeverBeAfraidOfFalling

          THEY TRIED IT, THEY LOVED IT

          Stronger Hair, Stronger Stories. See Genesis in action. #NeverBeAfraidOfFalling

          PDP Section FAQs

          FREQUENTLY ASKED QUESTIONS

          PDP Section Routine Carousel

          COMPLETE YOUR ROUTINE

          GENESIS

          At Kérastase, we believe in the power of unique experiences. Discover the products of this range and maximise your results!


          Genesis Bain Hydra-Fortifiant Shampoo
          Genesis Bain Hydra-Fortifiant Shampoo
          Genesis Bain Hydra-Fortifiant Shampoo
          Genesis Bain Hydra-Fortifiant Shampoo
          BEST-SELLER

          Genesis Bain Hydra-Fortifiant Shampoo

          Nourishing & Fortifying Shampoo For Thin or Oily Hair

          Genesis Bain Nutri-Fortifiant Shampoo
          Genesis Bain Nutri-Fortifiant Shampoo
          Genesis Bain Nutri-Fortifiant Shampoo
          Genesis Bain Nutri-Fortifiant Shampoo
          BEST-SELLER

          Genesis Bain Nutri-Fortifiant Shampoo

          Nourishing & Fortifying Shampoo for Thick or Dry Hair

          Genesis Fondant Renforcateur Conditioner
          Genesis Fondant Renforcateur Conditioner
          Genesis Fondant Renforcateur Conditioner
          Genesis Fondant Renforcateur Conditioner
          BEST-SELLER

          Genesis Fondant Renforcateur Conditioner

          Nourishing & Fortifying Conditioner

          Genesis Masque Reconstituant
          Genesis Masque Reconstituant
          Genesis Masque Reconstituant
          Genesis Masque Reconstituant
          Best-Seller

          Genesis Masque Reconstituant

          Nourishing & Fortifying Hair Mask

          One size
          200 ml
          Genesis Defense Thermique
          Genesis Defense Thermique
          Genesis Defense Thermique
          Genesis Defense Thermique
          BEST-SELLER

          Genesis Defense Thermique

          Nourishing & Fortifying Blow-Dry Cream

          One size
          150 ml
          Discover Related Articles

          DISCOVER RELATED ARTICLES
          HOW TO PREVENT HAIR BREAKAGE, ACCORDING TO A PROFESSIONAL​

          Are you concerned about hair breakage? Whether you’ve spotted signs of breakage in your hair, or you want to protect your hair from future damage, Kérastase Care Coach, Leona, is here to help.

          READ NOW
          4 TIPS TO REDUCE HAIR BREAKAGE FOR OILY ROOTS AND DRY ENDS

          Your days of seeing hair on your brush are finally over with Genesis, powerful hair products that address hair fall due to breakage from brushing.

          READ NOW
          HOW TO REDUCE POSTPARTUM HAIR LOSS

          Noticed you’re losing hair after giving birth? You’re not alone – post-pregnancy hair loss is a common change many women experience in the months after having a baby. It can be alarming, especially if you’re used to thicker, fuller hair than usual during pregnancy.​

          READ NOW
          HOW TO PREVENT HAIR BREAKAGE, ACCORDING TO A PROFESSIONAL​

          Are you concerned about hair breakage? Whether you’ve spotted signs of breakage in your hair, or you want to protect your hair from future damage, Kérastase Care Coach, Leona, is here to help.

          READ NOW
          4 TIPS TO REDUCE HAIR BREAKAGE FOR OILY ROOTS AND DRY ENDS

          Your days of seeing hair on your brush are finally over with Genesis, powerful hair products that address hair fall due to breakage from brushing.

          READ NOW
          HOW TO REDUCE POSTPARTUM HAIR LOSS​

          Noticed you’re losing hair after giving birth? You’re not alone – post-pregnancy hair loss is a common change many women experience in the months after having a baby. It can be alarming, especially if you’re used to thicker, fuller hair than usual during pregnancy.​

          READ NOW
          Rated 5 out of 5 by from Simplesmente maravilhosa Comprei e estou amando cheiro incrível e com muito macio
          Date published: 2026-03-16
          Rated 5 out of 5 by from Great product,definitely i will by again. I love I am so happy with this product. It worth evry pence
          Date published: 2026-02-21
          Rated 4 out of 5 by from Better than i thought Due to my diagnosis one of the issues i suffer with is hair loss. In one wash i would loose a full hand of hair. I have been using this product now for a month and i have new hair growth. Cant believe it and it smells amazing. If i could share photos i absolutely would
          Date published: 2026-01-07
          Rated 5 out of 5 by from The only serum that works I’ve been trying so many serums and remedies. From argan oil, to castor oil to different brands of hair serums. Took vitamins, because ferritin, zinc and magnesium are also important, and my hair still fell too much. Of course the stress is probably the main factor, but I started using Kerastase Genesis 4 weeks ago and I saw results after a week. I never had so little hair fallouts when brushing or washing my hair. I recommended it to all my friends who struggle with hair loss. I use 4 pipettes every morning (love the fact that it’s not greasy). I will do the recommended 6 weeks treatment, but I already bought 2 extra bottles for maintenance. Does anyone do maintence after treatment? I wonder if after 6 weeks I should reduce to 2 pipettes a day or use 4 every few days.
          Date published: 2026-01-01
          Rated 1 out of 5 by from Needs clearer information before purchase Recommended treatment six to seven weeks. The Kerastase website and vendor do not advise that the quantity in one bottle, even at three pipettes up to the black line per day, is insufficient. I have followed the instructions exactly and have already used half the bottle in ten days. In order to continue the treatment for the full period a second bottle is required doubling the price,
          Date published: 2025-12-26
          Rated 2 out of 5 by from Not worth the money Bought this recently as I’d heard amazing things but it makes a hair feel awful when applying and goes sort of crispy. Hair fall/ growth hasn’t changed
          Date published: 2025-12-12
          Rated 1 out of 5 by from Had more hair fall won’t buy again I had high hopes Espically with so much social media hype and no negative review anywhere. On the first week noticed significant amount of shedding thought it was normal but it got worse where I started to see bald spot got scared and had to stop and hair fall became better. It’s expensive and sad to see no honest review.
          Date published: 2025-08-23
          Rated 1 out of 5 by from Awful product The product smells awful and does nothing good for my hair at all. In fact it’s causing hair loss! Terrible customer service as well.
          Date published: 2025-06-10
          • y_2026, m_6, d_3, h_11
          • bvseo_bulk, prod_bvrr, vn_bulk_3.0.46
          • cp_1, bvpage1
          • co_hasreviews, tv_0, tr_161
          • loc_en_GB, sid_KER_00050, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
          • clientName_kerastase-uk
          • bvseo_sdk, dw_cartridge, 18.2.0, p_sdk_3.2.0
          • CLOUD, getReviews, 3ms
          • reviews, product
          Free delivery
          Contact Us
          Free Delivery Contact Us 0
          Orientation message
          For the best experience, please turn your device