Use this nourishing oil to thoroughly hydrate your hair and stimulate your scalp. For those with thick hair, this serum can add shine, define curls, and hydrate dry ends. For those with normal or thinner hair, Tropical Locks can be used in small amounts as a smoothing & perfuming serum. It can also be used as a hydrating treatment. Saturate the hair, let sit for 30 mins and then wash out.