This essence helps to unclog pores with 8% AHA, and firm and smooth skin with Korean chestnut shell extract, providing moisturizing and soothing benefits. Isntree Clear Skin 8% AHA Essence is a unique essence which contains glycolic acid (4%) and lactic acid (4%) which work to remove dead skin cells, revealing a smoother and brighter complexion. Glycolic acid is an AHA. It penetrates deeply and quickly, while lactic acid is more gentle and has hydrating properties. The formula also contains soothing Centella Asiatica and hydrating hyaluronic acid. Isntree Clear Skin 8% AHA Essence helps boost the absorption and efficacy of the products applied as the next steps of your skincare routine.