The following was taken from Dr. Mercola's website:
Sunscreen is regulated by the FDA as an over-the-counter drug because it contains several "active" ingredients. The debate over toxicity of these active ingredients is still a controversy.
One study found that the main chemical used in sun lotions to filter out ultraviolet light may be TOXIC -- and the chemical's toxicity doubled when exposed to sunlight. Octyl methoxycinnamate (OMC), which is present in 90 percent of sunscreen brands, was found to kill mouse cells even at low doses in a study by Norwegian scientists. When researchers shone a lamp for two hours to simulate midday sunshine, even more cells died.
And a study in the April 2004 Journal of Chromatography found that there is significant penetration of all sunscreen agents they studied into the skin. So, it's a fair to assume that when you use sunscreen your body is absorbing synthetic chemicals.
And if you follow the recommendations on the sunscreen's label to apply generous amounts of the product every few hours, it's likely you will be absorbing your fair share of potentially toxic chemicals. It takes a stretch of the imagination to believe that all of these chemicals will not have any effect on your system.
This is why I have searched our natural sun protection.