Stimulate Your Scalp! Promote Fast, Healthy Hair Growth Start w/ 1 c coconut oil, add 1 t olive oil. Whip to make glossy treatment. It's best to apply to scalp when your hair is dry & it's ok to comb it down into the hair strands too! Let the treatment sit on the scalp for 15 min. You can cover your head with a towel or shower cap to keep the moisture in. Your scalp will continue to feel cool, tingly and clean for several hours afterwards!