Protection
Knowledge Base articles tagged Protection.
-
Does glass block UVA? Windows, cars and UV film
Ordinary window glass stops almost all UVB but lets a large share of UVA through. How much passes through home, office and car glass, why windshields differ from side windows, what the driver skin-cancer studies show, and how to choose UV film.
Read → -
UVA and your eyes: sunglasses, UV400, cataracts and pterygium
How UVA reaches and damages the eye, what UV400, EN ISO 12312-1 and ANSI Z80.3 actually guarantee, why dark lenses without UV filtering may be worse than none, and why frame shape matters more than lens darkness.
Read → -
UVA sunscreen labels decoded: PA+++, the UVA circle, stars and critical wavelength
SPF measures UVB almost exclusively. How to read actual UVA protection: the EU circled-UVA logo, the Japanese PA system, Boots stars, the US broad-spectrum test, avobenzone photostability, and which UVA filters are available where.
Read →