Kérastase Genesis Homme Daily Purifying Fortifying Shampoo is for weakened hair, prone to thinning. Key Claims: - 72% of men agree that hair has volume - 88% of men agree that hair feels soft - 89% of men agree that hair feels deeply cleansed - 94% of men agree that no residue is left on the hair - 94% of men agree that the product rinses out quickly - 94% of men were satisfied with the product Disclaimer: Consumer test. 59 men using bain de force quotidien with self-perceived hair thinning.