PEG-90/POLYEPSILON CAPROLACTONE

INCI: PEG-90/POLYEPSILON CAPROLACTONE | Function: Film Former | Type: PEG Copolymer

What Is PEG-90/POLYEPSILON CAPROLACTONE?

PEG-90/polyepsilon caprolactone is a block copolymer combining PEG-90 with polycaprolactone (a biodegradable polyester). The PEG-90 segment provides high water solubility while the polycaprolactone segment contributes film-forming properties. Used as a water-soluble film former in skincare products for long-lasting effects.

Key Skin Benefits

+ 成膜 — 在皮肤表面形成一层薄而柔韧的保护膜 (Forms a thin, flexible protective film on skin)
+ 持久效果 — 帮助活性成分更长时间停留在皮肤上 (Helps active ingredients stay on skin longer)

Pros

+ 非离子型 — 与大多数化妆品成分兼容性好 (Non-ionic — good compatibility with most cosmetic ingredients)
+ 温和 — 通常皮肤刺激性低 (Generally mild with low skin irritation potential)
+ 多用途 — 可用于多种产品类型（驻留型和洗去型）(Versatile — suitable for leave-on and rinse-off products)

Cons

− 合成成分 — PEG化过程涉及石化衍生物 (Synthetic — PEG manufacturing involves petrochemical derivatives)
− 可能含微量1,4-二噁烷 — 需通过纯化工艺去除 (May contain trace 1,4-dioxane — requires purification to remove)
− 非活性成分 — 仅作为配方助剂，无直接护肤功效 (Non-active — functions only as a formulation aid, no direct skincare benefit)

Specifications

Property	Value
Usage Areas	Face, Body
Product Type	Leave-On, Rinse-Off
Source	Synthetic
Natural Level	Synthetic

Safety Ratings

Metric	Rating
Skin Sensitivity	1/5 (low)
Comedogenic Rating	0-1/5
EWG Score	3/10

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 %
Peel-off mask	1 - 5%
Setting spray	0.5 - 2%

References

CIR — Safety Assessment of PEG ingredients. PEGs considered safe as used in cosmetics.
EWG Skin Deep — PEG compound hazard database
EU CosIng Database — Listed as cosmetic ingredient

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