A synthetic block copolymer of polyethylene glycol and polycaprolactone, regulated in Annex III.
What it is
Methoxy PEG-114/polyepsilon caprolactone is a synthetic copolymer consisting of a methoxy-capped polyethylene glycol chain (an average of 114 ethylene oxide units) linked to a polycaprolactone chain. CosIng lists it as a buffering, film-forming and hair-conditioning ingredient. In the EU it is covered by an entry in Annex III (substances subject to restrictions).
Where it is used
Found in a small number of products.
Limits of interpretation
The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.
See the EU regulation section for the applicable limits; according to the EU data, the Annex III entry concerns its presence as traces in ingredients.
Functions
- Buffering
- Stabilising the pH of an aqueous medium in a narrow range even if an acid or base is added. Altering and/or maintaining a cosmetic product's pH at the desired level.
- Film forming
- Producing (upon application) a continuous film on the skin, hair or nails.
- Hair conditioning
- Enhancing the appearance and feel of hair. Leaving the hair easy to comb, supple, soft and shiny and/or imparting volume, lightness, gloss, texture, etc.
EU regulation
- Product type
- As traces in ingredients
- Maximum concentration
- 0.1%
- As of
- 3 November 2026 · (EC) 2013/344