Skip to content

Hair Waving Agent

MEA-THIOLACTATE

CAS 54266-38-5 Updated
42

Safety score · 0–100

Moderate

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

About

A thiol-bearing hair waving/relaxing agent that breaks disulfide bonds for permanent reshaping. The reactive thiol carries sensitisation, odour and respiratory risk — clear orange caution.

Function

HAIR WAVING OR STRAIGHTENING

Skin benefits

  • Hair waving/straightening agent
  • Disrupts disulfide bonds for permanent reshaping
  • Long-standing professional salon use

Known concerns

  • Reactive thiol — recognised skin sensitiser
  • Strong odour; can irritate eyes and respiratory tract
  • Damages hair if misused
  • EU restrictions for hair-waving products

References

EU

EU CosIng database

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

Check your shelf

Find MEA-THIOLACTATE in your products.

Scan any cosmetic product with LuxSense to see if it contains MEA-THIOLACTATE and get a full ingredient breakdown with safety scores.

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.