Skin cancer runs in my family, so I wear sunscreen. Matter of fact, I wore 50 for the past week, since I was at the shore and in the sun and ocean daily. I did not burn and still have a deep tan because your body's melanin kicks in to protect your skin. As far as the safety of sunscreens I would rather wear one and work on detox of the chemicals however people see fit, either through exercise and foods and/or natural remedies. My doctor has done quite a bit research since 1 in 4 patients that come to him have some form of cancer. He also lost half his family to cancer. He has told me the same thing, to take a walk in the sun for about 10-15 minutes a day.
I was watching a show on the Discovery Channel and they said in the next 10 years or so people will probably be taking resveratrin daily (a component of wine) which is a potent anti-radical, anti-viral, anti-fungal, anti-bacterial, and science has dicovered that it can extend lifespan by 30%. Just about every cancer physician now (from conversations with people who have it) are recommending a natural supplement made from veggies and fruits encapsulated because they have found that we do not eat the necessary amount to protect our bodies, not to mention pesticides, etc.
So as much as I believe that sunscreen may have chemicals in it that might be harmful, the risks outweigh the benefits of not wearing it. Just drink a lot of wine afterward.
If there is something natural out there that will work as well as the 50 I wore, I'd wear it. Purple is not my color. Sorry OM. I am sure you look beautiful in any color.