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Kerastase

Kerastase Genesis Strengthening Fondant Renforcateur Conditioner - For Weak or Damaged Hair, Detangles & Hydrates, For Normal to Dry Hair

  • Based on 1,356 reviews
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Friday, Aug 21
Order within 15 hours and 36 minutes
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Size: 6.8 Fl Oz (Pack of 1)


Brand: KÉRASTASE


Item Form: Liquid


Material Feature: Sulfate Free


Hair Type: Normal


Product Benefits: Strengthens hair weakened by heat damage and brushing. Addresses oily hair and scalp by helping to prevent oil build up on the scalp. Prevents risk of hair-fall due to breakage from brushing See more


Product Dimensions ‏ : ‎ 1.97 x 2.96 x 7.48 inches; 6.8 ounces


UPC ‏ : ‎


Manufacturer ‏ : ‎ KERASTASE


Best Sellers Rank: #5,556 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #114 in Hair Conditioner


#114 in Hair Conditioner:


Customer Reviews: 4.6 4.6 out of 5 stars (1,696)


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Aug 21

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

    • 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 Miller
    • Best for strong and full hair
Size: 6.8 Fl Oz (Pack of 1)
Great product and value. It has bern going up in price due to inflation, but still the best price around. I love how it softens my hair and gives a great shine. Easy to brush and adds to thicker and stronger hair.
Reviewed in the United States on January 23, 2026 by Jennifer Wahnschaff
    • Favorite conditioner
Size: 6.8 Fl Oz (Pack of 1)
My favorite conditioner, lightweight and leaves hair healthy
Reviewed in the United States on December 25, 2025 by Amy
    • Smells amazing, works great but price is an issue
Size: 6.8 Fl Oz (Pack of 1)
I use this line weekly and love the smell. It makes my hair a little stronger too. Only complaint is that the price keeps going up and up. So is it worth it? Not really sure. Hair is very soft though.
Reviewed in the United States on September 2, 2025 by anyone
    • High quality high results
Size: 6.8 Fl Oz (Pack of 1)
I love this conditioner. It makes my hair feel soft and also strong. The smell is pleasing and clean. I don’t love the price point, but I do think it’s worth it.
Reviewed in the United States on July 27, 2025 by Katiejean517
    • 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.
    • 💫 The Perfect Conditioner for Weak or Damaged Hair!
Size: 6.8 Fl Oz (Pack of 1)
This Kérastase Genesis conditioner is amazing! It leaves my hair soft, shiny, and easy to detangle without feeling heavy. It really helps strengthen and hydrate weak or damaged hair. My hair feels healthier and smoother every time I use it — absolutely love it!
Reviewed in the United States on October 15, 2025 by Maria Coronel
    • Wonderful smell
Size: 6.8 Fl Oz (Pack of 1)
I love the way my hair feels and smells omg it’s giving herbal essence but more expensive. I usually use a serum afterwards but when I use this I skip it since it leaves my hair soft
Reviewed in the United States on October 16, 2025 by Abril Galvan Beltran

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