Overview
- Dermatologists recommend using a facial sunscreen with at least SPF 30 every day and SPF 50 for strong sun exposure to reduce premature aging and skin cancer risk.
- Sunscreen only protects when used correctly: apply generous amounts, wait about 30 minutes before sun exposure, and reapply at least every two hours or after swimming or heavy sweating.
- Independent lab testing this week found many products fail to deliver their labeled SPF, meaning some sunscreens offer less UV protection than consumers expect.
- Scientists and consumer groups warn that chemical filters such as octocrylene and octinoxate can cause contact allergies, may affect hormone systems, can persist in waterways, and can degrade into concerning compounds like benzophenone.
- Practical steps to reduce risk include choosing mineral‑filter formulas, checking expiry and storage marks, relying more on shade and UV‑protective clothing, and favoring face‑specific lightweight sunscreens for daily use.