PEG-150

PEG / Ethoxylated

What is PEG-150?

PEG-150 consists of polyethylene glycol chains with approximately 150 ethylene oxide units, forming a water-soluble synthetic polymer produced through ethoxylation of ethylene oxide. This compound falls under polyoxyethylene derivatives commonly incorporated into cosmetics like moisturizers, cleansers, shampoos, and solid formats such as sticks or powders. In formulations, it operates by binding solid particles together, enhancing product cohesion and durability during use. As a solvent, it solubilizes diverse ingredients, regulating viscosity and aiding even dispersal. Its humectant action involves binding water molecules to maintain moisture balance on the skin surface. The elevated molecular weight limits penetration, keeping it superficial while supporting overall formula performance and sensory attributes.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1-6 View on EWG →
PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Binder
Helps hold solid ingredients together to form cohesive tablets, compacts, or sticks, improving pressability, integrity, and wear of the finished product.
Humectant
Attracts and holds water in the stratum corneum, boosting hydration and plumpness; commonly used in moisturizers, cleansers, and hair conditioners.
Solvent
Dissolves and carries other ingredients, helping control viscosity, evaporation rate, and delivery of actives in both water- and oil-based systems.

Benefits

Supports skin surface hydration by drawing in atmospheric moisture

Facilitates smoother application through solvent and binding actions

Contributes to stable, cohesive textures in creams, sticks, and powders

Who It's For

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

Who May Benefit Who Should Avoid
Individuals in low-humidity environments needing moisture retention
People sensitive to polyether compounds
Users of compact or stick products for better wear
Those wary of ethoxylation process impurities
Those with formulas requiring ingredient solubilization for evenness
Users preferring formulations without synthetic polymers

Safety Notes

  • Cosmetic review experts deem it suitable for topical use with purity controls
  • Manufacturing may introduce trace residues, favoring verified suppliers

Frequently Asked Questions about PEG-150

What roles does PEG-150 play in cosmetics?

It functions as a binder for solids, humectant for moisture, and solvent for ingredient mixing.

Is PEG-150 irritating to skin?

Evidence from reviews indicates low irritation potential, especially at high molecular weights.

Why is PEG-150 used in so many products?

Its versatility in stabilizing formulas, dissolving actives, and boosting hydration makes it widespread.