How long does salicylic acid take to work on acne?
On One Hand: Salicylic Acid takes timeSalicylic acid works best over long periods of time, when consistently applied. It removes the top layer of skin, exfoliating to reveal softer skin. It also improves the skin surface to apply further acne medications.On the Other: Salicylic Acid does not penetrateSalicylic acid can take up to three months to loosen whiteheads and black heads buried beneath the skin. It can only treat acne on the direct surface of the skin in a shorter period of time. It is also not very effective against larger pimples.Bottom LineSalicylic acid is only effective on mild acne, and is only effective when used over long periods of time. If salicylic acid is applied consistently, deep whiteheads and blackheads may take up to three months to remove. Salicylic acid can only work well on mild acne over long periods of time.Source:Over the counter acne treatmentDermnetnz.org: Salicylic AcidDoes Salicylic Acid Work on Acne?