Shampoo your hair only once every 2 to 3 days Washing your hair every day can zap away moisture from the scalp and dry out your hair. Shampoo your hair once every two or three days to retain moisture.Step 2: Use a protein-rich conditioner. Natural conditioners that contain a high concentration of protein work best for dry, damaged hair. The proteins help smooth out the hair and protect the strands from root to tip. Always make sure to rinse conditioner thoroughly from the hair or you'll be left with residue that makes hair dull and lifeless.