1. Sun Blocker
In the United States, one of the active ingredients in many sunscreens is oxybenzone, a moderately effective sun blocker, but one that reacts with sunlight to form possibly allergenic and carcinogenic chemicals. Oxybenzone is popular because it rubs in well, but for safety, we recommend sunscreens with either titanium dioxide or zinc oxide as the active ingredient.
2. Tiny Toxins
Some companies use a nano-particle sized version of titanium dioxide or zinc oxide (often referred to on labels as micronized titanium dioxide or micronized zinc oxide), which absorbs better and won't make you look ghostly white. However, nano-scale ingredients are also small enough to be an inhalation risk in powder or spray-on sunscreens, and titanium dioxide is known to be carcinogenic if inhaled.
3. Preserve, Protect?
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4. Hidden Phthalates
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5.Hormone Disrupter
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