Freckles are small, flat tan or brown spots on the skin caused by increased production and localized buildup of melanin in skin cells. Melanin is produced naturally as a skin pigment and protection against sunlight—that's why prolonged sun exposure can produce or darken freckles, especially in people with fair skin. Predisposition to freckles can be genetic (like fair skin), and is even related to the presence of red hair. Freckles aren't harmful, but some people don't like the way they look. If you're one of those people you can take steps to lighten your freckles.
Rub a piece of lemon over your freckles or dab them with the juice. Leave for 15 to 20 minutes and wash off with warm water. Lemon has high concentration of vitamin C, which will add extra benefits for your skin!
Make a mask with yogurt. The lactic acid it contains can act as a natural and gentle exfoliant (working like a light chemical peel). Masks made with yogurt can minimize your freckles by exfoliating skin with high melanin content. Simply apply the yogurt to your face and let it sit for a few minutes before rinsing off with warm water.
Make a parsley infusion. Get a handful of fresh parsley from the store or your garden and soak in boiling water for about 15 minutes. Let it cool down. Dip a piece of cotton in the parsley "tea" and apply to your face every other day for about two weeks.