SheerZinc SPF 30 protects both elastin and skin proteins from harmful uv damage and collagen breakdown. ensuring uva and uvb protection, while providing a translucent glow. It is gentle enough for acneic skin and even retinol users. It goes on thin with an almost water like consistency, not oily, doesn't leave white on the skin and leaves the surface of skin looking very smooth. Its lovely. A little goes a long way here.