eCosmetics is an authorized retailer of Pyunkang Yul. Mild Formula with a Rich Lather. The renewed Pyunkang Yul Low pH Pore Deep Cleansing Foam is a gentle yet effective cleanser that maintains your skinu2019s natural balance with its low pH formula. It deeply cleanses pores using fine-grained Diatomite and fruit derived AHA while soothing with Centella Asiatica and Tea Tree extracts.