Over- secretion of melanin is known to cause dark spots. Here are five homemade recipes with lemon to get rid of dark spots on the face. Those remedies take a while to work but in the end they are worth it :
Lemon contains citric acid which exfoliates the skin by peeling the dead cells like a soft peeling. It also helps even skin tone.
Squeeze out some juice out of a lemon and apply it directly on the dark spot by dipping a cotton ball in the lemon juice. Let it rest for about half an hour and rinse it off with cold water. Repeat this at least two times a day. It takes 2 months for you to see positive results.If you have a delicate or sensitive skin, you can dilute the lemon juice with plain water
Rub lemon and honey or sugar dissolved on the dark spots or use it as face mask.
Apply lemon juice, cucumber juice and rose water on affected areas.
Mix lemon juice and turmeric. Apply the paste on face.
Mix lemon juice with tomato juice and apply once a day on the dark spots.