Extra virgin coconut oil! Apply it to your hair (it will be semi-solid) and wrap. You can use a shower cap, a warm towel, or whatever works for you. I find it penetrates better when warmed, but have used it both ways. Keep on for approx. 1/2 hour. Shampoo. Oil and water do not mix so I apply shampoo to oiled hair without adding water at first. Scrub until foamy then rinse and shampoo again. For those that don’t use a commercial shampoo, you can use cornstarch or baking powder to absorb the oil then rinse. I’m over 40 and after using this, my hair is like it was when I was 20!