Act+Acre Stem Cell Scalp Serum and Scalp Gua Sha Tool Never been used, in perfect condition. Powered by 2% Apple Stem Cells, this scalp serum promotes thicker, fuller looking hair and supports scalp health in early stages of hair thinning. + Promotes thicker, fuller looking hair + Supports hair follicle health + Increases scalp hydration Size: 2.2 fl oz