TL;DR: blocks very wide UV radiation, harmless ingredients. Extremely water resistant.
Retail links:
Why this sunscreen?
My preference for sunscreen is that:
- It blocks UVB (main tanning effect, +1 cancer)
- It blocks UVA (main wrinkle contributor, +1 cancer)
- It uses a physical blocker (better for you and the environment than chemical blockers). Background info.
- Has long shelf-life (stable ingredients over time)
Waxhead is my current favorite. It has only 4 ingredients, and the main sunblocking ingredient is Zinc Oxide: a very wide UV blocker that is as harmless as sand.
Most commercial sunscreens over-focus on UVB, and use many ingredients that are either known to be harmful or unknown to be harmless. Both for humans and the environment (say coral reefs).
