Paul Mitchell Tea Tree Scalp Care Regeniplex Shampoo is for those who experience hair thinning. This anti-thinning shampoo gently cleanses and treats the scalp for stronger, thicker-looking hair. 85% of users* reported an increase in hair volume and strength with regular use. With a colour-safe formula and reparative blend of ingredients, this shampoo will help you combat thinning and achieve thicker, fuller-looking hair. Formulated to be paraben-free, gluten-free, sulfate-free and vegan with a botanical scent.