I don't recommend chemicals, you can use lemon, potato and rice to lighten dark spots. Just rub the lemon and potato around the area every other day, keep for 30 min or so and wash. But you have to grind the rice, add water and make a thick paste, then cook it for 2-3 min and apply on the dark regions, and scrub for 30 min then wash...u can also mix them up. Search YouTube for more. ✌