Glossary

Organic UV Filter

Written by Reviewed by the SYNC editorial team Published Last reviewed Editorial standards

Organic UV Filter — a carbon-based sunscreen ingredient that protects skin primarily by absorbing ultraviolet radiation and converting it into small amounts of heat. Often called chemical filters, this group includes molecules such as avobenzone and octocrylene, and different filters absorb different portions of the UV spectrum.

Key points

  • Organic filters work mainly by absorbing UV energy and releasing it as negligible heat rather than reflecting it.
  • Examples include avobenzone, octinoxate, octocrylene, and newer filters like bemotrizinol used in some regions.
  • Individual organic filters cover specific UV wavelengths, so several are often combined for broad-spectrum coverage.
  • Some organic filters can degrade in sunlight, which is why formulations pair them with stabilizers or photostable partners.

Frequently asked

Are organic UV filters the same as chemical sunscreens?

Yes, organic UV filter is the more precise term for what are commonly called chemical sunscreens, referring to carbon-based molecules that absorb UV light.

Why do sunscreens combine multiple organic filters?

Each filter absorbs only part of the UV spectrum, so combining several helps achieve broad-spectrum coverage and can improve overall photostability.

Related topics

This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.

Encyclopedia

Further reading

This entry was written and checked against the sources below. They are published by clinical and scientific bodies, they are listed most readable first, and each one opens in a new tab. They are background for the whole entry rather than footnotes to individual sentences.

  1. Introduction to Sunscreens and Their UV Filters - Review of Fate, Exposure, and Effects of Sunscreens in Aquatic Environments and Implications for Sunscreen… StatPearls (NCBI Bookshelf) Reference text ncbi.nlm.nih.gov
  2. Questions and Answers: FDA posts deemed final order and proposed order for over-the-counter sunscreen U.S. FDA Regulatory and safety fda.gov
  3. Sunscreen: How to Help Protect Your Skin from the Sun U.S. FDA Regulatory and safety fda.gov
  4. Ultraviolet Filters: Dissecting Current Facts and Myths PubMed Central Peer-reviewed, open access pmc.ncbi.nlm.nih.gov
  5. Ultraviolet radiation and human health DermNet NZ Clinical guidance dermnetnz.org
  6. Ultraviolet (UV) Radiation U.S. FDA Regulatory and safety fda.gov

SYNC does not publish medical advice. Nothing here replaces a consultation with a doctor or a pharmacist about your own skin.