Lemon: This is rich in vitamin C. It's known for natural anti-oxidant properties that help to reduce melanin in your skin. Lemon consists of citric acid which is a first-rate exfoliating agent. Citric acid removes the dead cells and makes the skin look lighter and brighter. Procedure: Take tablespoon of brown sugar and mix it with egg white. Add one teaspoon of lemon juice to it. Apply this mixture on your face and gently rub with your fingers in circular motions. Repeat this process for 10-15 minutes and wash the covered area.