The active ingredient sulfur has been used in many OTC products to reduce the number of acne blemishes, pimples, blackheads and whiteheads as it kills bacteria on the skin. It is proven effective but probably won't act as fast as overnight.
The other main acne-treating ingredient is salicylic acid (Beta hydroxy acid, BHA). This is a multifunctional acne-fighting ingredient. Salicylic acid is an effective exfoliant and also an anti-irritant. It gently exfoliates the surface of skin and penetrates into the pore, and thus can exfoliate inside the pore as well as on the surface of the skin, which makes it effective for reducing blemishes, including blackheads and whiteheads. It also treats acnes due to its anti-inflammatory and antimicrobial properties.
However, the most abundant ingredient is isopropyl alcohol which could be very irritating and dry to skin, and even causes free radical damage. Use this only as a sopt treatment when necessary.
Safety alert: Cautious
review based on scientific information of the product ingredients.
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