zinc oxide

Hold The Zinc Please

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Hold The Zinc Please
Remember when the idea of wearing sunscreen used to mean pasty white globs of thick creams on your nose? That was zinc oxide, which is why most people skipped the sunscreen in the early days. Among the individual sunscreen ingredients approved by the FDA, there are chemical and physical sunscreens.  To be effective, chemical sunscreens need to be rubbed into the skin for about 20 minutes before sun exposure. They do a good job at blocking...
 
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