As an exfoliator

Watermelon is an excellent skin exfoliator as it is rich in malic acid. If you want to exfoliate your dead skin cells, simply rub watermelon pulp on your face and wash it off after 20 minutes. Watermelon is an excellent source of Vitamin-A, which is a powerful natural anti-oxidant. 100 g fresh fruit provides 569 mg or 19% of daily-required levels of this vitamin. It is one of essential vitamin for vision and immunity.