Oc
Octocrylene
OctocryleneSPF filter
Chemical UV filter often blended with avobenzone to stabilize it. Effective; mild allergen risk for a small subset of users.
What it does
Octocrylene absorbs UVB and short UVA, but its more important role is photostabilizing avobenzone (which would otherwise degrade quickly under UV). Most modern chemical sunscreens that contain avobenzone include octocrylene for that reason. A 2021 study reported octocrylene degrading into benzophenone over time — the practical implication for daily-use cosmetics is debated, with most regulators concluding the exposure level is too low to be of concern.
Pairs worth knowing
This page is public and indexed on purpose (unlike profiles and drops, which are unlisted) — it’s the citation behind shared ingredient cards, and it should be findable.
Want more like this?
Get Drop, free. Every flag cites its source, the app tells you when your routine is complete, and it helps you simplify — instead of selling you more products.