Start your journey to thicker, fuller-looking hair with Nioxin's System 4 Cleanser. The advanced formula combines salicylic acid, peppermint oil and niacinamide to deeply cleanse the hair and scalp, eliminating sebum and dulling debris and preparing the hair for further treatment. Ideal for those with colour-treated and progressed thinning hair, this colour-safe formula leaves the hair and scalp feeling renewed and revitalised without stripping the hair of vital moisture.