7. In addition to eating fresh fruits to supply your skin with collagen building vitamin C
, you can also smear them onto your face for gentle acid exfoliation. Just puree a forth a cup of pineapple and smooth it onto your face. Leave it for 10-15 minutes, then rinse. Since the pineapples contains ascorbic acid, it will impart a brightening effect on the face, and help fade acne marks.