PEG-3 TRIMETHYLOLPROPANE TRISTEARATE
INCI: PEG-3 TRIMETHYLOLPROPANE TRISTEARATE | Function: Emulsifier, Emollient | Type: PEG Trimethylolpropane Ester
What Is PEG-3 TRIMETHYLOLPROPANE TRISTEARATE?
PEG-3 TRIMETHYLOLPROPANE TRISTEARATE 是一种PEG化三羟甲基丙烷（TMP）脂肪酸酯，由三官能醇TMP与硬脂酸 (stearic acid)酯化后再与PEG-3醚化制得。作为多臂结构非离子乳化剂和润肤剂，三臂结构提供独特的乳化稳定性和滋润肤感。(PEG-3 TRIMETHYLOLPROPANE TRISTEARATE is a PEGylated trimethylolpropane fatty acid ester. The tri-arm structure provides unique emulsion stability and emollient feel.)
Key Skin Benefits
- + 多臂乳化 — 三官能结构提供多点锚定，乳液更稳定 (Multi-arm emulsification — tri-functional structure offers multi-point anchoring for better stability)
- + 滋润肤感 — 脂肪酸链提供润肤效果 (Emollient feel — fatty acid chains provide moisturizing effect)
Pros
- + 稳定乳液 — 三臂结构优于线性乳化剂 (Stable emulsion — tri-arm structure outperforms linear emulsifiers)
- + 肤感优良 — 柔润不油腻 (Good skin feel — soft, non-greasy)
Cons
- − 含PEG — 环氧乙烷工艺 (Contains PEG — ethylene oxide process)
- − 合成来源 — TMP为合成多元醇 (Synthetic origin — TMP is a synthetic polyol)
Specifications
| Property | Value |
|---|
| Usage Areas | Face, Body, Hair |
| Product Type | Leave-On, Rinse-Off |
| Source | Synthetic |
| Natural Level | Semi-synthetic |
Safety Ratings
| Metric | Rating |
|---|
| Skin Sensitivity | 1/5 (low) |
| Comedogenic Rating | 0-2/5 |
| EWG Score | 1/10 |
Regional Regulatory Limits
| Region | Leave-on % | Rinse-off % | Status |
|---|
| EU (CosIng) | No limit | No limit | Allowed |
| US (CIR/FDA) | No limit | No limit | Allowed |
| Japan (MHLW) | No limit | No limit | Allowed |
| ASEAN | No limit | No limit | Allowed |
| China (NMPA) | No limit | No limit | Allowed |
Typical Usage % by Product Type
| Product Type | Typical % |
|---|
| Face Cream | 1 - 5% |
| Body Lotion | 1 - 4% |
| Makeup Primer | 0.5 - 3% |
References
- CIR (2010) — Safety Assessment of PEGs as Used in Cosmetics. Conclusion: PEGs safe as used. PMID: 20629512
- CosIng (2025) — European Commission Cosmetic Ingredient Database. https://ec.europa.eu/growth/tools-databases/cosing/
- EWG Skin Deep — PEG compound hazard database. https://www.ewg.org/skindeep/
- SpecialChem — Cosmetic ingredient selector and formulator reference. https://cosmetics.specialchem.com/