In short, should the proposed rules be enacted, we'll end up with a clearer understanding of what we're buying and of what sunscreen can and can’t do to protect us from UVA and UVB rays. For its part, the Skin Cancer Foundation is on board. In a statement released today, the foundation said, "As science and technology have advanced over the past several years to dramatically improve the efficacy of sunscreens, continued evaluation of the regulations associated with them is necessary, as is the evaluation of new UV filters that are currently available outside the U.S. "