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Hair Conditioning

ISOPROPYL THIOGLYCOLATE

CAS 7383-61-1 Updated
40

Safety score · 0–100

Moderate

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

About

An isopropyl thioglycolate ester used in hair perms and straighteners. EU Annex III restriction limits use levels and mandates safety warnings on label — real sensitization and irritation risk.

Function

HAIR WAVING OR STRAIGHTENING

Skin benefits

  • Effective in hair waving and straightening at controlled use levels
  • Established perm-chemistry actor

Known concerns

  • EU Annex III restricted — labelled use limits and warnings required
  • Documented skin sensitizer (thioglycolate class)
  • Eye and skin irritation risk
  • Strong sulfur odour and reactive thiol chemistry

References

EU

EU CosIng database

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

Related hair conditionings

40
GLYCIDOXY DIMETHICONE
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MINOXIDIL HYALURONAMIDE
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PILOCARPUS MICROPHYLLUS LEAF EXTRACT
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STEARAMIDOETHYL DIETHYLAMINE
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4-Amino-m-cresol
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BIS-HYDROXYETHYL COCOMONIUM NITRATE
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CETETHYL MORPHOLINIUM ETHOSULFATE
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CINCHONA CALISAYA BARK EXTRACT
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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.