Skin Doctors Bio Serum 50ml Skin Doctors Bio Serum™ can be used daily on the face or the body. It contains powerful antioxidants and soothing oils that target dry and dehydrated skin, as well as scars, stretch marks and uneven skin tone. Benefits you will notice immediately: Soothes and moistens skin, Seals in moisture, Leaves skin feeling smooth and healthy. Benefits after long term use: Helps reduce the appearance of stretch marks and scars, Promotes skin elasticity, Provides long-lasting protection from the elements, Reduces the appearance of uneven skin tone, Helps smooth wrinkles and fine lines.