Skin cleanser and astringent Brisk, with a peppermint oil fragrance, is an excellent antiseptic blend of analgesics and astringents that contains tea tree oil, natural germicide, and fungicide. Brisk cleans and refreshes itchy irritated skin caused by oils, perspiration and extensive prosthetic wear. Brisk has been tested for dermal irritation and has been proven safe for use on human skin.