Onions are a great source of flavonoids as well as antioxidant vitamins, such as vitamins A, C and E. All these help in protecting our skin cells from the damaging effects of ultraviolet (UV) rays.
If you have acne then the benefits of eating raw onions is great for your skin because onions contain anti-inflammatory properties which fight acne-causing bacteria.
One of the benefits of eating onions however is that the antioxidants work beautifully to clean out the skin's impurities so that your skin looks and feels better.
Onion stimulates skin, bleaches it naturally and removes the dead skin layer. But don't apply raw onion juice to your skin as it might be harsh on your delicate skin.
Mix vitamin E oil with onion juice and apply over your dark lips before going to bed at night. Doing it for a month will remove the dark layer on your lips and make them pink again.