Ingredient

Terephthalylidene Dicamphor Sulfonic Acid

Low risk

FunctionAntioxidant

What it is — Terephthalylidene Dicamphor Sulfonic Acid (INCI of the same name), a synthetic organic compound also widely known by the trade name Mexoryl SX.

What it does — It is best known as a photostable UV filter used to help absorb ultraviolet light, and it is sometimes described for its antioxidant-type protective role against everyday oxidative stress.

Typical use — Common in sun-protection products and daytime moisturizers; its use as a UV filter is regulated and permitted levels vary by market.

Who it suits / good to know — Suitable for most skin types when used in a finished, compliant formula; it pairs well with other filters and antioxidants.

Safety — Rated low risk here and generally considered well tolerated. This is general information, not medical advice; patch-test new sun products if your skin reacts easily.

Cross-reference

Found in these DHALIORA products

Found in 2 DHALIORA products

Day&Blue UV Sun Mist SPF50+ Day&Blue UV Sun Mist SPF50+Screening 8.9 EIIO Refreshing Sea Salt Scalp Scaler EIIO Refreshing Sea Salt Scalp ScalerScreening 9.0
How grades are set — Risk reflects our own reading of publicly available safety data, an EWG-style reading shown at the worst-case grade we've assigned this ingredient across products. It isn't a third party's proprietary score, and it isn't medical advice. Always read the packaging and patch-test where indicated.
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