Moisture through and through. The Oil-Free Ultra-Moisturizing Lotion by Cosrx is was specially formulated to complement AHA and BHA-enriched products. It contains 70% birch juice water that soothes sensitive or freshly exfoliated skin. The hyaluronic acid found in the formula penetrates the skin to supply it with the moisture that it requires. It is a fast-absorbing lotion that does not leave behind a greasy film for a fresh and supple skin feel.