I don't wash it out at all. It's my sealant and I apply it before I apply my leave-in conditioner. Your scalp and hair will absorb the oil. It's no need to rinse or wash out. Just don't put too much in your hair. Just an adequate amount to where its not running. I usually just run the applicator on in my head a couple of times and massage, usually 4 long swipes through your head then massage. If your head feels greasy, you've used too much.