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As an antibacterial compound, boric acid can also be used as an acne treatment. It is also used as prevention of athlete's foot, by inserting powder in the socks or stockings,

Boric acid is a natural antiseptic, anti-fungal agent, and astringent. A teaspoon of boric acid in four ounces of distilled water makes a good wash for wounds, rashes, minor burns, or as an acne treatment. It also relieves the itch from insect bites. A teaspoon in four cups of water can be used to treat sore eyes, irritation, or weird eye discharges.