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Kerastase Genesis Fondant Renforcateur Conditioner – Weak Hair, 6.8 Fl Oz

Based on 2,063 reviews
Condition: New
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$52.00

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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon

Arrives Oct 30 – Oct 31
Order within 5 hours and 27 minutes

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At a glance

Condition
New
Size
6.8 Fl Oz (Pack of 1)
Dimensions
1.97 x 2.96 x 7.48 in
Weight
6.8 oz
Item Form
Liquid
Hair Type
Normal
Scent Name
Ginger

Features 5

  • Renforcateur Conditioner: This lightweight conditioner provides immediate strength and softness. It strengthens hair weakened by heat damage and brushing using anti-breakage action and fiber fortication. Provides moisture and shine. Detangles and adds volume
  • Benefits: Formulated with edelweiss native cells and ginger root for added strength. Provides immediate strength and softness without weighing down the hair.
  • Additional Benefits: Intensely Moisturizes and Adds Body - Strengthens Hair Weakened by Heat Damage and Brushing - Easily Detangles and Prevents Split Ends.
  • Suggested Use: Apply to shampooed towel-dried hair. Leave on for 2 to 3 minutes. Rinse thoroughly.

Description

Our hair care collection that treats hair fall due to hair breakage from brushing. The Genesis collection is a dual action fortifying system professionally formulated to strengthen hair and reduce hair breakage. Expert Formulas Fusio-Dose Instant Transformation, Infinite Possibilities. In-Salon Service Make an appointment in your Kérastase salon for a personalized hair diagnosis. Who should use the Genesis Fondant Renforcateur? It is ideal for those with normal to dry, weakened hair looking to reduce hair fall caused by breakage. How does this conditioner strengthen hair? It fortifies the hair fiber's natural resistance to reduce the risk of hair fall while providing essential hydration. Will this conditioner weigh my hair down? No, it is a lightweight formula that deeply nourishes and detangles without leaving a heavy residue. What are the main ingredients in this conditioner? It features a strengthening blend of Edelweiss Native Cells and Ginger Root to protect and soften the hair. How do I use this strengthening conditioner? After shampooing, apply a quarter-sized amount to towel-dried hair. Leave on for 2 to 3 minutes, then rinse thoroughly. Renforcateur Conditioner Nutri-Fortifiant Shampoo Hydra-Fortifiant Shampoo Reconstituant Hair Mask Defense Thermique Serum Fortifiant Serum PROFESSIONAL HAIRDRESSERS: Kérastase is a leading global luxury professional haircare brand. Born in Paris in 1964, the brand has built its reputation on delivering exceptional performance on scalp and hair through exquisite products and personalized, in-salon treatments, all powered by scientific expertise. Kérastase adopts a care-first philosophy to care for all hair types and all individuals, as well as the world we live in.

Specs 22

Product Dimensions 1.97 x 2.96 x 7.48 inches; 6.8 ounces
Manufacturer KERASTASE
Item Form Liquid
Hair Type Normal
Product Benefits Intensely hydrates, detangles, and fortifies weak hair to reduce breakage and hair fall from brushing.
Scent Name Ginger
Additional Features Moistur, Nourishing, Strengthens
Package Type Name Bottle

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 30 – Oct 31

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


Investing in yourself is always worth it!
Size: 6.8 Fl Oz (Pack of 1)
It’s expensive but my hair is thin and weak, it needs love and good products so I decided to invest in this. Worth! I have been trying to only wash my hair two times a week max and I just feel like with this product makes that achievable. It leaves my hair very, very soft and smells really amazing. Days after putting it in, my hair still smells incredible. My hair overall feels healthier and less dry. ... show more
Reviewed in the United States on July 7, 2026 by Stephen Newman

fragrance is amazing!
Size: 6.8 Fl Oz (Pack of 1)
Love how this conditioner makes my hair so soft, and the fragrance is amazing! The scent lasts for a couple of days, which I really love. It leaves my hair feeling clean, soft, and smelling wonderful. Definitely a favorite!
Reviewed in the United States on August 27, 2026 by Flavi

Smooth hair 😍😍
Size: 6.8 Fl Oz (Pack of 1)
The fragance is really good. It helped a lot with frizz control.
Reviewed in the United States on September 11, 2026 by Krizia Barreto

Love how my hair feels
Size: 6.8 Fl Oz (Pack of 1)
As much as I love this brand it’s so expensive for the amount of product you get.
Reviewed in the United States on July 7, 2026 by Deborah Roop

Beautiful product results in beautiful hair.
Size: 2.5 Fl Oz (Pack of 1)
My favorite luxury shampoo wit a fragrance thats clean and leaves your hair smooth and lovely
Reviewed in the United States on August 30, 2026 by Blissy Pillowcase

My New Obsession
Size: 6.8 Fl Oz (Pack of 1)
The Kérastase Genesis Conditioner is pure magic in a bottle. From the first use, I could feel the difference — my hair felt instantly smoother, lighter, and stronger, without that heavy, coated feeling most conditioners leave behind. It detangles like a dream (no more tugging or breakage!) and leaves my hair smelling amazing — clean, floral, and expensive. 🌸 After blow-drying, my ends look sealed and shiny, and my hair feels like it’s had a professional treatment. This isn’t just conditioner — it’s therapy for stressed, fragile hair. I use it with the Genesis shampoo, and together they’re an unstoppable duo for fighting breakage and giving my hair that healthy, salon-fresh bounce. ... show more
Reviewed in the United States on October 6, 2025 by Krishayna Wilson

Good, not great. Expensive, so should be better.
Size: 6.8 Fl Oz (Pack of 1)
Not as good as Moroccan for hair frizz
Reviewed in the United States on January 19, 2026 by Josh J.

LOVE
Size: 2.5 Fl Oz (Pack of 1)
Paired with the shampoo, chef’s kiss! These products have actually made my hair grow past my shoulders.
Reviewed in the United States on July 28, 2026 by Saige
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