It's not easy to find a sheet mask that can help treat acne, but the Mediheal Tea Tree Essential Blemish Control Mask does just that. Made with a blend of acne-fighting and anti-inflammatory ingredients, like willow bark, a natural alternative to salicylic acid, tea tree, which has naturally antibacterial properties, and chamomile to calm blemishes, this mask helps purify pores, reduce redness, and even gently exfoliate skin. The formula is also free of fragrance, alcohol, and sulfates, so it's safe for use on more sensitive skin types.