When using whole egg and yolk-only treatments in hair, the process can be done once a month. Egg whites can be applied to hair every two weeks. During each treatment, the eggs should be left in the hair for 20 to 30 minutes.
Eggs are primarily used in hair for their moisturizing properties, which stem from the fats and proteins eggs contain. Eggs also contain bacteria-eating enzymes, which are great for removing unwanted oils. Eggs can add shine, repair hair loss and sometimes even help repair hair damage. For normal hair, experts suggest using the whole egg. For people with oily hair, it is best to use only the egg whites. And for those with dry hair, only the egg yolks should be used.