What's Inside. COSRX AC Collection Lightweight Soothing Moisturizer (1). Refreshing and moist! Just what you need for troubled skin!. Is your skin dry no matter how much you moisturize? Don't worry. This is refreshing care without the worry.. *Tested and proven hypoallergenic. For Smooth, Healthy, Skin Texture. Essential item for daily skincare. How to use. Take a small pump or 2 and apply gently to sensitive skin. Pat in gently and let it absorb.