A new website assesses the effectiveness and safety of almost 800 sunscreens. The suncreen screening site was put together by the Environmental Working Group and gives detailed information about many sunscreen products. It also groups them by the types of harmful rays they're meant to protect against.

SPF numbers on sunscreens only cover UVB, the type of rays most responsible for burns. UVA is far less responsible for burning, but still can raise skin cancer risk. Only one sunscreen in five has effective UVA protection. There are ingredients that protect well against UVA, but sunlight can break down and make them ineffective if they are not formulated well.

Watch out for the commonly misleading claims -- all day protection, waterproof or chemical free products. You can check the website for sunscreens that are recommended and ones to be avoided.

In the past year, I have had three severe skin reactions characterized by red, itchy, burning bumps that start on my chest and without fail climb over my shoulders and onto my back. They last for a few weeks, are irritated by the Florida heat, and have had no known cause -- until today when I visited my dermatologist for a skin cancer screening and briefed her on this bizarre condition that has kept me away from sunscreen and out of the swimming pool and in hiding from the sun. I have suspected that sunscreen, chlorine, the sun -- or some combination of the three -- have been my potential irritants. So I've been avoiding them altogether. But I learned today that the sunscreen and the chlorine are not to blame. That leaves the sun, which is the most likely culprit -- and only because I have received chemotherapy with one very toxic drug. Adriamycin.

My dermatologist told me about a phenomenon called UV Recall that is associated with Adriamycin. Apparently the toxicity of this drug, even though administered long ago, can be recalled, causing a reaction when the UV rays of the sun soak into my skin. Sunscreen may help, my doctor told me, but she cautioned me that it is just a screen -- it does not offer full protection. And she said the best suncreen option would include zinc oxide. I think for me, though, staying out of the sun is my best bet. It's not ideal -- it means I will remain on the fringe of the swimming pool, hiding in the shade, while my boys swim their little hearts out. And tropical vacations will be off my wish list. And I will seek outdoor fun mostly after the sun goes down. But this is okay -- I knew there were long-term side effects of chemotherapy drugs. I am just thankful for now that my heart has not been compromised -- a side effect of both Adriamycin and the drug Herceptin that I have also received. And it's also not a bad thing that the steps I must now take to prevent skin reactions are also the steps that protect me from skin cancer. So in some sort of round-about way, my inconvenient skin issues may just help me stay healthy. And that's just fine with me.