Dawn will strip your hair of natural oils. It is great to use if you ever stick you head in a bucket of oil. The hair care industry and teaching has changed in leaps an bounds the last five years. My friend use to be a hairdresser at a high end salon, her niece is now in beautician school and is learning more then my friend ever knew about hair health. She said shampoo with keratin is recommended for daily use for older hair.