Mayonnaise: Smear real mayonnaise throughout your hair (again, for the folks with oily scalp and skin, don’t rub it into your scalp or too close to your hairline) and make sure to really work it into the ends. Make sure your hair is completely dry. The amount depends on the thickness and the texture of your hair. Wash your hands, and then wrap your hair in a towel. A shower cap or plastic bag on your head will also help contain it. Keep it like that for about an hour. Rinse your hair, and then shampoo it. Style your hair the way you normally do.