Overview
- Recent coverage on June 21–22, 2026 emphasized that sunscreens remain a key daily defence against UV-driven skin aging and cancer but only deliver their stated protection when used correctly.
- SPF measures protection against UVB and must be applied at about 2 mg per cm² of skin — roughly 40 ml for an adult full body — 20–30 minutes before sun exposure and reapplied at least every two hours or after swimming or heavy sweating.
- Health authorities including the BfR and BfS say approved UV filters show no convincing evidence of harm to consumers, and studies do not support claims that sunscreen causes clinically relevant vitamin D deficiency.
- Storage and expiry matter: opened sunscreens are generally effective for about 12 months, high heat (above ~30 °C) and light exposure can degrade UV filters, and labels like “waterproof” are misleading because protection can wash off.
- Regulatory action is focused on the environment not human safety — the EU Chemicals Agency (ECHA) is reviewing limits on octocrylene over marine-ecosystem concerns, and consumers worried about that impact may choose mineral-based filters.