Chemical filter

Ensulizole

Water-soluble UVB filter. TGA’s 2025 review called current Australian use low risk. Australia allows 4%.

Ensulizole is a water-soluble UVB filter (peak about 302 nm), useful in light or gel formulas. Australia allows 4% in listed therapeutic sunscreens. The EU cap is higher at 8% as acid. The US monograph still lists 4% and FDA wants more modern GRASE data.

TGA’s July 2025 review found a margin of safety above 100 and classed it as low risk. No major current endocrine or cancer signal.

A quiet, acceptable UVB option. Not as efficient as ethylhexyl triazone.

Sources

Sunscreens with Ensulizole

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