The Environmental Working Group says 56% of beach and sport sunscreens contain the chemical oxybenzone.
Some nanotechnology products are applied directly to the skin, as cosmetics and sunscreens.
The lack of UVA filters in the U.S. "does limit the ability of sunscreen manufacturers to manufacture good, broad-spectrum sunscreens, " he said.
Concerns have been raised about powder and spray sunscreens damaging lungs, and the FDA is still evaluating the toxicity risks of these products.
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The Environmental Working Group report found that fewer sunscreens - about 25% - contain retinyl palmitate, compared to 33% in last year's study.
Rooftop solar arrays, rainwater catchment systems, a hot water recycling pump, sliding sunscreens, trellises and a few other features are optional upgrades.
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The newly formed PASS Coalition, short for Public Access to Sunscreens, is urging the FDA to act on the eight pending applications for sunscreen ingredients.
On top of that, sunscreens can be labeled "broad spectrum" only if they protect equally against UVB (the main culprit of skin cancer) and UVA rays, which cause aging.
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If so, what about all those things that didn't exist back then--not just iPods and mobile phones but everyday items like wrinkle-free pants, effective sunscreens, prewashed salads-in-a-bag or comfy hotel beds?
"I know patients bring sunscreens with them from Europe and it's very hard for us to give recommendations because we really don't have much data" on such products, Dr. Russak said.
When it is ground into nanoparticles it can still block harmful ultraviolet radiation, but it allows visible light to pass straight though, which means modern sunscreens can appear completely transparent, while offering the same protection as the old white stuff.
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