Kérastase hair serum praised for stronger hair in Amazon bestseller deal

A Kérastase hair serum has become a bestseller on Amazon, with one reviewer saying it left their hair feeling stronger and healthier and made it more resilient during brushing and styling. The Kérastase Genesis Anti-Hair Fall Fortifying Serum is currently available in a limited-time deal, with more than 4,000 bought in the past month according to the Amazon listing.

The Kérastase Genesis serum is reduced to £35.81 for the 90ml bottle, down 31 per cent from its £52 RRP. It is currently listed as a number one bestseller in Hair Serums, although shoppers should note that other sizes are available and their prices can vary.

One customer who reviewed the Genesis Anti-Hair Fall Fortifying Serum said they had been using it consistently for several weeks and were "really pleased with the results". They praised its lightweight texture, saying it absorbed quickly into the scalp without leaving their hair feeling greasy or weighed down.

The reviewer also said they had noticed their hair felt stronger and healthier, with less breakage when brushing and styling. They were clear that the results were not instant, but said regular use had improved the overall condition of their hair and made it feel more resilient. See the Kérastase Genesis serum deal

For anyone looking to address hair that feels weakened by everyday styling, the Kérastase scalp serum is designed specifically around breakage rather than claiming to treat every form of hair loss. Kérastase describes it as a daily fortifying serum for weakened hair prone to falling due to breakage, rather than a medical treatment for underlying causes of hair loss.

The formula contains Aminexil, Ginger Root and Edelweiss Native Cells. Kérastase says these ingredients work to strengthen the hair fibre, protect against external aggressors and help reinforce the scalp's natural protective barrier. Shop the Genesis serum at the reduced price

Kérastase says its own testing found up to 84 per cent less hair fall due to breakage after six weeks, based on a brushing test involving 99 people. That is a brand claim based on a specific testing method, so it should not be interpreted as a guarantee that every user will see the same result.

Using the Genesis hair serum is relatively straightforward. Kérastase recommends applying three to four doses, with one dose being one pipette up to the marked line, to a dry or towel-dried scalp section by section. It should be massaged gently into the scalp and left in rather than rinsed out. The brand recommends using it once daily, morning or evening, over a six-week targeted period.

Interestingly, the reviewer said they did not always use the full four-pipette recommendation, explaining that they adjust the amount according to how thick their hair is and how damp their scalp feels. They said they personally use two at a time, although this is their own approach rather than the manufacturer's recommended dosage.

The same reviewer also mentioned the serum's fresh floral scent and said that, despite being more expensive than some alternatives, they felt it was worth the investment for strengthening hair and reducing breakage over time. They finished by saying they would happily repurchase the Kérastase Genesis serum.

The product has also received strong feedback on Kérastase's own website, where the Genesis serum currently has a 4.6-star average from more than 3,300 reviews. The brand notes that some reviewers received samples or participated in promotions, so those reviews should be considered in that context.

At £35.81, the 90ml Kérastase Genesis deal offers a £16.19 saving against the £52 RRP, but the limited-time price could change. Other bottle sizes are also available, with different prices, so it is important to check that the 90ml option is selected before ordering.

If weakened hair and breakage are concerns, the Kérastase Genesis serum for £35.81 is worth a look, particularly given its bestseller status, the volume of recent purchases and one reviewer's experience of hair feeling stronger and more resilient with consistent use.