Methoxy PEG-114/Polyepsilon Caprolactone

PEG / Ethoxylated

What is Methoxy PEG-114/Polyepsilon Caprolactone?

Methoxy PEG-114/Polyepsilon Caprolactone is a synthetic amphiphilic copolymer formed by grafting a methoxypolyethylene glycol chain (with 114 ethylene oxide units) onto a poly(ε-caprolactone) polyester backbone. This structure blends hydrophilic (water-attracting) PEG segments with hydrophobic (water-repelling) polyester chains, enabling solubility in water-based formulas while providing barrier properties. It appears in hair styling sprays, conditioners, sunscreens, and long-wear makeup. In products, it functions by depositing a flexible, breathable film on hair or skin, which enhances adhesion, resists water and smudging, and imparts smoothness. Additionally, it stabilizes pH levels to maintain formula integrity and supports conditioning effects by reducing friction between hair strands.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1-4 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Buffering agent
Maintains the pH stability of a formulation.
Film former
Creates a continuous film on skin or hair to improve wear, water resistance, transfer resistance, shine, or hold in sunscreens, makeup, and styling products.
Hair conditioning
Improves softness, shine, and manageability by reducing friction and static; commonly achieved with cationic agents, silicones, oils, or conditioning polymers.

Benefits

Creates a durable film for better product staying power and water resistance in styling and sun protection items.

Enhances hair texture by improving softness, luster, and ease of combing.

Helps maintain stable pH in formulations for reliable performance.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
People styling hair for all-day hold without stiffness.
Those with sensitivity to PEG-derived ingredients.
Users wanting transfer-resistant makeup or sunscreens.
People preferring formulations without ethoxylated compounds.
Individuals seeking smoother, more manageable hair.
Users experiencing irritation from film-forming polymers.

Safety Notes

  • Rated low to moderate concern by hazard assessment databases.
  • Non-comedogenic, unlikely to clog pores.

Frequently Asked Questions about Methoxy PEG-114/Polyepsilon Caprolactone

What products contain this ingredient?

Commonly used in hair sprays, conditioners, sunscreens, and long-wear makeup for film-forming and conditioning.

Is it safe for daily use?

Safety databases rate it low to moderate concern, suitable for most cosmetic applications.

Does it irritate skin or eyes?

Evidence points to low irritation potential in formulated products.