dr. ali hendi, a dermatologist with the skin cancer foundation. dr.hendi, thank you very much for being with us. >> thanks for having me, judy. >> woodruff: so i mentioned a couple of them but in your words what are the main changes that people should look for with these new regulations coming out next summer from what exists now. >> judy, these are welcome changes from the perspective of dermatologists that care for patients with skin cancer. number one is the product has to have uv-a and uv-b protection to be labeled as a broad spectrum. up to now it's mostly been uv-b but uv-a is a critical factor in development of skin cancer and sun damage and aging. a product cannot label itself as being waterproof or a sun block. those do not exist. there's no iningredient that is a total sun block and there's no product that is waterproof. so those are some of the main changes. >> woodruff: but we've seen a number of skin lotions, we just put a couple of them here as an example, you know, that still claim that they are waterproof. >> they do. these provide a f