Evidence-informed learning
Sun-protection guides
Practical, source-conscious education for reading labels, choosing products, and combining sunscreen with clothing, hats, and shade.
Reviewed guide
How to Choose a Sunscreen
A practical label-first framework for choosing a sunscreen for daily wear, swimming, sports, and family use.
Read guide →Reviewed guide
What SPF Means
Understand what the SPF number describes—and what it does not tell you about a sunscreen.
Read guide →Reviewed guide
Broad-Spectrum Sunscreen Explained
A plain-language guide to the broad-spectrum label and why it is distinct from SPF.
Read guide →Reviewed guide
Water-Resistant Sunscreen Explained
Learn how to read 40- and 80-minute water-resistance labels without treating sunscreen as waterproof.
Read guide →Reviewed guide
Sunscreen for Kids and Babies
A conservative shopping checklist for age information, labels, application format, clothing, hats, and shade.
Read guide →Reviewed guide
How Much Sunscreen to Apply
Why adequate, even coverage matters and how to avoid commonly missed exposed areas.
Read guide →Reviewed guide
When and How Often to Reapply Sunscreen
Use the product directions, activity, water exposure, sweating, and toweling to plan reapplication.
Read guide →Reviewed guide
UPF Clothing Explained
How to interpret a sourced UPF rating and compare garments without inventing protection claims.
Read guide →Reviewed guide
Sun Hats and Physical Sun Protection
A coverage-first approach to hats, clothing, sunglasses, and shade.
Read guide →Reviewed guide
How to Read a Sunscreen Label
A field-by-field checklist for SPF, broad spectrum, water resistance, active ingredients, directions, warnings, and expiration.
Read guide →