How to Naturally Lighten Sun Spots. Every night saturate a cotton ball with about 1/4 tsp of apple cider vinegar and 1/4 tsp of lemon juice. Starting at forehead and working down apply evenly all over face. If you have sensitive skin, or if it feels too strong dilute with water. For best results do not rinse and leave on overnight.
Stir a teaspoon of lemon juice in a teaspoon of turmeric powder. Apply the mixture on any affected area. Leave it on for 15 minutes Rinse your face thoroughly Do not expose your skin to sun. Apply the remedy before taking a shower, and apply it once or twice a day until your condition improves. This home remedy is based on the principles of Ayurveda, an ancient Indian science of healing.