Hair-conditioning quaternized protein
PROPYLTRIMONIUM HYDROLYZED SOY PROTEIN
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
Soy-protein peptides modified with a quaternary ammonium group to deposit on hair and reduce static. Standard, gentle conditioning ingredient with minor sensitivity considerations.
Skin benefits
- Antistatic and hair-conditioning quaternized protein
- Helps reduce frizz and improve manageability
- Soy peptides can support hair fiber strength
- Generally mild and well tolerated
Known concerns
- Quaternary ammonium chemistry can occasionally irritate eyes or sensitive scalp
- Soy-derived peptides may concern those with soy allergy
- Buildup possible with frequent leave-in use
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Same plant / compound family
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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.