Sun & Daily Protection
Physical vs Chemical Sunscreen: The Real Difference
Mineral and chemical sunscreens protect skin through different mechanisms, and the practical differences go beyond white cast versus no white cast.
Read the article →Section
Sun & Daily Protection
5 articles
Why Cloudy Days and Windows Still Need Sunscreen
UV exposure does not stop when the sky looks gray or when you are sitting indoors near a window. Here is what…
When and How Often to Reapply Sunscreen
Sunscreen protection does not hold steady all day. Here is what actually shortens the window and what a realistic reapplication schedule looks…
What SPF and PA Numbers Actually Mean
SPF and PA measure two different kinds of sun exposure, and the labels are easy to misread. Here is what the numbers…
How Much Sunscreen You Actually Need
Most people apply a fraction of the sunscreen a bottle's SPF rating assumes. Here is what a full-face amount actually looks like.