banana hair mask- 1 mashed banana 1 egg 3 tablespoons honey 3 tablespoons milk 5 tablespoons olive oil Combine all the ingredients in a bowl. Using a wide-toothed comb, apply the mask to your hair from the roots to the ends. Let the mask soak into your hair for about fifteen to thirty minutes. The more damaged your hair is, the longer you want to wait. Rinse out the mask with cold water, then shampoo and condition your hair as usual.