Kérastase Genesis Hair Serum, For Weakened Hair Prone to Hair Loss, With Ginger Root & Edelweiss Flower
Reviewed 9 August 2026 · price checked live
Check price on Amazon →Overview
KÉRASTASE Genesis Hair Serum, For Weakened Hair Prone is one of the 50 hair care products in our catalogue, tracked on rating, review volume and live price. The maker describes it as follows: A daily fortifying leave-in serum designed to help strengthen weakened hair and help reduce the risk of hair fall from breakage. Formulated with Ginger Root and Edelweiss Flower the formula is designed to help strengthen and help reduce hair fall from breakage. Those are the seller's own claims rather than our testing, so treat them as a starting point. On Amazon it holds 4.6 out of 5 from 7,815 ratings. What that score is worth next to its rivals is set out below.
- Brand
- KÉRASTASE
- Amazon rating
- 4.6 / 5 from 7,815 ratings
- vs Hair Care
- 0.1 above the category median of 4.5
- Rank in category
- 17 of 50 rated hair care we track
- Price position
- Towards the top of the range (category spans £3.49 to £47.11)
- How proven
- Moderate review volume
How it compares in Hair Care
Across the 50 rated hair care products we track, the typical score is 4.5 out of 5. This one sits at 4.6, which is around the middle of the category. Ratings alone will not separate it from its rivals here, so price and the specifics below matter more than the star count.
It carries 7,815 ratings against a category median of 10,487. That is enough of a base to take the score seriously without treating it as settled.
On price it sits in the upper third of a category running from £3.49 to £47.11, where the midpoint is about £11.82. Paying above the category norm needs a reason beyond the rating, because the score alone does not justify the gap here.
Worked out from the 50 hair care products in our catalogue, not from the brand's own claims. How we rank →
Key features
- PRIMARY BENEFIT: A daily fortifying leave-in serum designed to help strengthen weakened hair and help reduce the risk of hair fall from breakage.
- KEY INGREDIENTS: Formulated with Ginger Root and Edelweiss Flower the formula is designed to help strengthen and help reduce hair fall from breakage.
- RESULTS: A product that helps to reinforce and preserve the scalps natural protective barrier and protect against external aggressors.
- HOW TO USE: Apply once daily, in the morning or before bed. Massage into a dry or towel-dried scalp section by section. Do not rinse.
- WHO IT'S FOR: This product is designed for hair prone to falling due to breakage, and to help strengthen weakened hair.
