The Learning Lab
What SPF do I need?
Sun protection factor (SPF) is a rating system introduced in 1974 and measures how much UVB radiation is needed before a sunburn shows up on protected skin relative to the amount of UVB radiation required to produce sunburn on unprotected skin. As the SPF value increases, sunburn protection increases. SPF...
How do I Apply Mineral Sunscreen?
Mineral Sunscreens (sometimes called physical sunscreens) are quite different than the common sunscreens we grew up with. Top mineral sunscreens* are much healthier and more effective at keeping sunburn and skin cancer at bay, but they call for a different approach to skincare in the sun. Thicker than chemical sunscreens, top...
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