Other / Pharma Intermediate
trans-4-Phenyl-L-proline
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A modified phenyl-proline used as a pharmaceutical building block, not a typical cosmetic ingredient. Limited safety data forces a conservative use-with-awareness rating.
Skin benefits
- Modified amino acid used in peptide/pharmaceutical chemistry
Known concerns
- Pharma intermediate; no established cosmetic role
- No CIR/SCCS review identified
- Cosmetic-grade safety data essentially absent
- Defaults to caution
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related other / pharma intermediates
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.