Peppermint can balance pH levels and keep in check the production of oil on the skin. In addition, it helps in reducing acne, blackheads, redness, and rashes on the skin. Peppermint contains vitamins a, c, folates, and omega-3 fatty acids, which can fight against the harmful effects of the sun. Peppermint is also used in treatment of athlete's foot and other fungal infections.