an overnight spot treatment to effectively treat blemishes without drying skin. benefits. our acne treatment synthesizes 10% active sulfur and salicylic acid to effectively medicate and treat blemishes. balanced with camphor to calm skin while fighting impurities, our formula incorporates zinc oxide to help prevent signs of scarring. suitable for all skin types, including sensitive. natural fragrance and colour. directions. do not shake. after cleansing skin, apply white sulfur sediment with cotton swab directly onto blemish at bedtime as an overnight treatment. limit to one application daily to avoid drying out skin.