The Ordinary Lactic Acid 5% + Ha Exfoliating SerumA gentle exfoliator designed to give smoother skin, targeting textural irregularities, dullness, and uneven skin tone. Description Lactic acid 5% + ha is a gentle alpha hydroxy acid solution that provides effective exfoliation for the skin's surface. Enriched with purified tasmanian pepperberry extract, known for reducing irritation associated with acid use, this water based serum is particularly suitable for dry and sensitive skin. How to use Apply