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DIMETHYLAMINOSTYRYL HEPTYL METHYL THIAZOLIUM IODIDE

45

Safety score · 0–100

Moderate

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

A cationic thiazolium salt with a stilbene-like chromophore functioning as a fluorescent whitening agent or conditioning material in cosmetic formulations.

This quaternary ammonium thiazolium iodide is a specialized functional ingredient with fluorescent whitening and cationic conditioning properties. It has no EU cosmetic restriction listing, but the iodide counterion presents mild concern for iodinated compound sensitization. The stilbene-like dimethylaminostyryl chromophore is structurally related to certain optical brighteners that have undergone SCCS review. Dermal absorption of this relatively large molecular weight cation is expected to be low, supporting safety at current use levels.

Skin benefits

  • Provides fluorescent whitening optical effect on skin
  • Cationic conditioning properties for hair and skin

Known concerns

  • Iodide counterion sensitization concern
  • Cationic material may cause irritation in sensitive individuals
  • Structural similarity to optical brighteners under review

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.