Both glycolic acid and salicylic acid are popular ingredients in skincare products for acne owing to their ability to unclog blocked pores — but there are notable  differences between them. 

Salicylic acid can unclog blocked pores, but it also tends to reduce the skin’s natural oil production — which can lead to excessive dryness, irritation, and peeling. This disruption can weaken the skin’s natural protective barrier and increase sensitivity. Some users also experience stinging or burning, particularly those with sensitive skin, eczema, or rosacea.

In rare cases, Salicylic acid can cause allergic reactions requiring medical attention  — especially in individuals allergic to aspirin.

Glycolic acid, on the other hand offers a gentler, but still very effective solution that exfoliates, unclogs pores, and improves skin texture without escessively stripping the skin's natural oils — all the while supporting hydration and maintaining the integrity of the skin barrier.