Chemical filter

Mexoryl SX

Water-soluble UVA filter, usually paired with Mexoryl XL. Australia allows 10%. Long use, thinner modern long-term dataset than the newest triazines.

Ecamsule is a water-soluble camphor UVA filter (peak about 345 nm), marketed as Mexoryl SX and usually paired with oil-soluble Mexoryl XL. Australia allows 10%. The EU cap is 10% as acid. In the US it appears only in some New Drug Application formulas, not on the open OTC monograph.

Some systemic absorption can occur. There is no convincing clinical evidence of endocrine, reproductive or carcinogenic harm at permitted use. The modern long-term dataset is less extensive than for bemotrizinol or DHHB, which is why the concern score sits at 2 rather than 1.

A proven UVA option, mainly in L’Oréal-family products.

Sources

Sunscreens with Mexoryl SX

Are we sloppy? Tell Gus.