L'Oreal Professionnel Serioxyl Clarifying Shampoo for Natural Thinning Hair is a premium hypoallergenic formulation that contains targeted ingredients for thin, fine coloured hair. Containing Polysorbate 21 and Magnesium Sulfate, your hair confidence is restored as you say hello again to naturally healthy hair that looks denser whilst also having an enviably healthy condition. Clarifying and removing any traces of previous product build-up from both the scalp and the hair shaft, vibrancy returns and your hair is full of life and natural bounce.