What it is: A purifying shampoo for thinning hair gently exfoliates with wintergreen-derived salicylic acid, removing oil and environmental residues that can clog pores. Who it's for: Ideal for thinning hair.What it does: Reduce hair loss with aveda's latest advancement for thinning hair: the invati ultra advanced 4-step system. The first step in this routine is a purifying hair follicle shampoo. Gentle and non-irritating to the scalp, the formula creates a light, frothy lather and rinses clean. It leaves hair shiny and, when paired with our light thickening conditioner, helps thicken strands. How to use: Massage into wet hair and scalp. Rinse. Use as part of the invati ultra advanced 4-step system. Paraben-free; phthalate-free; sulfate-free; silicone-free; mineral oil-free; synthetic fragrance-free Dermatologist tested Vegan Made in the USA