Summarize the following:
Let the oil sit in your hair for at least 3 hours, or allow it to soak in overnight. Don’t wash your hair until you’ve left the egg oil in for the desired amount of time.  If you rinse the oil out too early, then it might not have the desired effects. Wrap a towel around your hair if you’re leaving the oil in overnight. Take a shower and clean out the egg oil with your usual shampoo. Massage your fingers through your scalp to make sure that you’ve removed all of the egg oil. Follow up with your usual conditioner.  Be sure to use shampoo to remove the egg oil from your hair instead of rinsing it out with just water! For this treatment to be most effective, use egg oil in your hair about twice a week. Pour a pea-sized amount of oil onto your fingertips and rub them together. Next, swipe over the aging or dark spot with your oil-coated finger. Repeat this treatment several times a week for maximum effectiveness.

Summary:
Leave the oil in your hair for 3-12 hours. Wash out your hair once you’ve let the oil sit for several hours. Apply the oil to dark spots and scars on your skin to reduce their appearance.