Tatcha

Tatcha Milky Sunscreen vs Bioré UV Aqua Rich: UVA-I Spectrum & Filter Audit (2026)

Tatcha uses zinc oxide — an FDA-approved filter that misses UVA-I (380–400nm). Bioré's Tinosorb S covers the full spectrum at 76% less cost. The UV bead test proves it. Bioré wins on science.