If you have darkening of the upper lip due to shaving, there are a few things you can try to help lighten the skin: Use a mild exfoliating scrub: Gently scrub your upper lip with a mild exfoliating scrub once or twice a week to remove dead skin cells and brighten the skin. Apply lemon juice: Lemon juice is a natural skin lightener. Simply mix a small amount of lemon juice with equal parts water, then apply the mixture to your upper lip with a cotton ball. Leave it on for 10-15 minutes, then rinse it off with water. Use skin-lightening creams: There are skin-lightening creams available over-the-counter that contain ingredients such as glycolic acid, hydroquinone, or kojic acid that can help brighten the skin. Be sure to follow the instructions carefully and patch test the product first to check for any sensitivity or allergies. Practice good skincare habits: Keeping your skin well-moisturized and protected from the sun can help prevent further darkening of the skin. If these remedies don't provide the desired results, it's best to see a dermatologist who can recommend other treatments, such as chemical peels or prescription skin-lightening creams.