Aveda's Protective Scalp Concentrate helps to balance sebum levels to maintain the purity of the scalp at the root of the hair. This formula penetrates the surface layers of the scalp to nourish and help preserve a natural protective barrier, while helping protect from aggressors such as pollution and other free radicals. Formulated with an exclusive blend of ingredients, including seaweed extract, lactobacillus and antioxidant tamanu oil, the scalp is left nourished, soothed and feeling comfortable all day. Part clean, damp hair from front to back hairline. Apply to part with dropper touching clean scalp. Repeat in 5 or more sections to cover entire scalp. Massage in. Do not rinse.