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Ingredient · INCI reference

Disodium Phenyl Dibenzimidazole Tetrasulfonate

This is a water-soluble organic UVA sunscreen filter (bisdisulizole disodium) that gives a light feel.

What it is

A water-soluble filter that absorbs in the UVA range, especially useful for adding UVA protection to lighter, water-based sunscreens. Because it sits in the water phase, it contributes a fresh, non-greasy feel and pairs well with oil-soluble UVB filters.

Spectrum coverage

UVA1 · UVA2

UVA-I 340–400nm UVA-I (340–400nm) — covered UVA-II 320–340nm UVA-II (320–340nm) — covered UVB 290–320nm UVB (290–320nm) — not covered

Regional approval · max %

JP Japan: No data KR 10% South Korea: Approved · Max 10% EU 10% Europe: Approved · Max 10% US United States: No data

Safety & warnings

A large, water-soluble molecule with low expected skin penetration; generally well tolerated.

Reef-toxic
No
Endocrine disruptor
No
Comedogenicity
0

Origin & sourcing

Synthetic organic UV filter.

Questions everyone asks

What does this filter protect against?

It is a UVA filter, often added to water-light sunscreens to boost UVA coverage.

Is it oily?

No, it is water-soluble and gives a light, fresh feel.

Sources & references

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