What it is
Methoxy PEG-114/Polyepsilon Caprolactone is an amphiphilic copolymer combining a water-compatible methoxy polyethylene glycol segment with a more lipophilic polycaprolactone segment. In sunscreen and skin care formulas it can help structure the film left on the skin and modify spreadability and finish. Its dual character allows it to interact with both aqueous and oily phases of an emulsion.
Safety & warnings
This is a high-molecular-weight polymer typically used at modest levels and is generally well tolerated. As with other PEG-containing materials, purity with respect to processing residues is the main quality consideration.
Origin & sourcing
Synthetic polymer produced by joining a methoxy-terminated polyethylene glycol block with a poly(epsilon-caprolactone) block.
Questions everyone asks
What role does this polymer play in a sunscreen?
It acts as a film former and texture modifier, helping shape the feel and finish of the product on the skin.
Is it a UV filter?
No. It does not absorb or reflect UV light; it is a formulation aid.