Shoppers across the UK have a final, time-sensitive opportunity to snap up a bestselling hair treatment at a significant discount. The renowned Kérastase Genesis Hair Serum, regularly priced at £47, is currently available for just £32.90 as part of LookFantastic's Cyber Weekend promotion.
Why This Serum Has Cult Status
This high-performance hair oil has garnered a loyal following for its targeted approach to weak, thinning, or fragile strands. Formulated with potent, nourishing ingredients, it aims to minimise breakage while promoting the appearance of fuller, thicker hair. The serum also works to hydrate strands, leaving hair looking and feeling silkier and smoother.
Its reputation is bolstered by a celebrity fanbase that includes figures like Kate Middleton, Beyoncé, and Jennifer Aniston. More importantly, it has accumulated a wealth of positive reviews from everyday users who attest to its visible results.
Shopper Reviews: Does It Deliver?
Many users report that the product lives up to its promises, often noticing a difference within a few weeks. One detailed review stated, "I’ve been using this product for over six weeks and have seen a huge improvement. I’m experiencing much less hair fall, and the front of my hair—previously fragile from bleaching—looks noticeably thicker."
Another shopper called it a "miracle worker", noting visible results after four weeks and significantly less hair left on their brush. They praised its texture, saying it absorbs well without leaving hair greasy.
A Note on the Price Point
While effective for many, the serum's cost has been a point of criticism for some. One user commented that while they saw less hair fall, they emptied a bottle in two weeks, making continual repurchase financially challenging. For those seeking alternatives, other serums like the UKLash Hair Growth Serum (£40) and the Champo Pitta Growth Serum (£34) have also received praise for promoting hair growth.
The 30% discount is a final Cyber Monday offer from LookFantastic, which has been running major Black Friday and Cyber Weekend deals. Today, Monday, 1 December 2025, marks the absolute last chance for consumers to secure this deal and enjoy savings on the sought-after serum before the price returns to normal.
