Skip to content

Prohibited Substance

melengestrol

CAS 5633-18-1 Updated
3

Safety score · 0–100

Avoid

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

About

A synthetic progestin used as a veterinary growth promoter. Banned in EU cosmetics under Annex II — sex hormones are categorically prohibited in personal-care products.

Skin benefits

  • Not a cosmetic ingredient

Known concerns

  • EU Annex II prohibited
  • Endocrine-active progestin
  • Veterinary pharmaceutical
  • No legitimate cosmetic use

References

EU

EU CosIng database

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

Related prohibited substances

3
Nickel oxide
Prohibited Substance
 3
Oxycodone hydrochloride
Prohibited Substance
 3
benzestrol
Prohibited Substance
 3
dimethisterone
Prohibited Substance
 3
methallenestril
Prohibited Substance
 3
pentagestrone
Prohibited Substance
 2
Anthracene oil, anthracene-low, if it contains > 0.1% w/w benzene
Prohibited Substance
 2
Benzol forerunnings (coal), if it contains > 0.1% w/w benzene
Prohibited Substance

Check your shelf

Find melengestrol in your products.

Scan any cosmetic product with LuxSense to see if it contains melengestrol 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.