UV Filter ·
Titanium Dioxide
What is it?
An inorganic (mineral) UV filter widely used in sunscreens and tinted products -- a genuinely effective broad-spectrum filter, though recent research has documented a real formulation consideration worth disclosing honestly.
What does it do?
According to PubMed, a 2025 study found that commercial mineral sunscreens containing titanium dioxide generated substantial amounts of persistent free radicals under simulated sunlight that remained active long after light exposure ended, with zinc-oxide-only formulations generating even more under wet conditions -- a real, honestly-disclosed photochemical consideration for mineral UV filters, not a reason to avoid them, but a genuine active area of sunscreen-formulation research.
Sources
This page provides general skincare information and is not medical advice, diagnosis or treatment. Ingredient interactions and evidence summaries reflect published, cited sources — not a personal assessment of your skin. For medical skin conditions, rashes, pregnancy/lactation questions or persistent concerns, please consult a licensed dermatologist or HPCSA-registered practitioner.