Salicylic acid serum is a skincare product that contains salicylic acid, a beta hydroxy acid (BHA) that is known for its ability to deeply penetrate the skin and exfoliate it to unclog pores. Salicylic acid serum is used to treat mild to moderate acne, oily skin, stubborn blackheads, or acne. It is also effective in reducing sebum and preventing breakouts from occurring. Salicylic acid serum is often used once a day, and it is recommended to use it in the right concentration. It is available in various over-the-counter (OTC) products and prescription-strength formulas. Salicylic acid serum can be used in combination with other acne treatments, but it is important to check with a doctor or pharmacist first before combining acne treatments. Salicylic acid serum is oil-soluble, which allows it to dive deep into the pores and dissolve the bonds that hold onto dead skin cells. It is also antibacterial and anti-inflammatory, which helps to calm the redness and swelling of existing blemishes as well as preventing new ones.