Sunscreen Guide: What SPF, UVA, and UVB Mean
What SPF, UVA, UVB, broad spectrum and water resistant mean on a sunscreen label, and how much to apply for the protection stated.
By Arni Sun · 3 min read
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Daily sun protection does more for the long-term look and health of skin than any other habit. These guides explain what SPF, UVA and UVB mean, how mineral and chemical sunscreens differ, how to reapply over makeup, and how shade, clothing and hats add protection. The second half of the section is about skin as it matures: how to start retinol safely, how skin changes around menopause, and how to tell an age spot from a freckle, with clear advice on when a mark should be checked by a doctor.
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What SPF, UVA, UVB, broad spectrum and water resistant mean on a sunscreen label, and how much to apply for the protection stated.
By Arni Sun · 3 min read