Many people think that sunscreen is just a different name for sunblock. There is actually a difference between these two products. Sunscreen, just like what the name suggests, screen(filter) the ultraviolet rays, meaning it absorbs some and leave the really bad things out, they call it a chemical block, and with sunscreen, you can still have tan and sunburn. Sunblock blocks the ultraviolet rays completely, it won’t let anything gets through your skin since it sits at the surface of your skin and it will reflects the sunlight back into the atmosphere. They call it a physical block.