My baby started developing rash at 3 weeks on face which later spread to neck. Was using agnesia lotion for body and oil for hair, had to stop and now using coconut oil. But as the rash is healing, the skin colour of the spot where the rash is becomes lighter. He is going to 5 weeks now. What do I do to blend d skin color as its giving me much concern.This is d picture of the rash on his neck.