PEG-150 Pentaerythrityl Tetrastearate

PEG / Ethoxylated

What is PEG-150 Pentaerythrityl Tetrastearate?

PEG-150 Pentaerythrityl Tetrastearate is a synthetic, non-ionic surfactant formed by esterifying pentaerythritol—a polyhydric alcohol—with four stearic acid molecules, then attaching a chain of 150 ethylene oxide units. Stearic acid derives from natural fats or synthetic sources. This high-molecular-weight compound appears as a waxy solid, prized in cosmetics for its dual functionality in emulsion-based products like creams, lotions, and conditioners. As an emulsifier, it lowers interfacial tension between oil and water phases, creating a protective film that prevents separation and ensures uniform consistency. Simultaneously, it controls viscosity by interacting with other ingredients to build desirable thickness, enhancing spreadability and sensory feel without greasiness. Its hydrophilic PEG chain boosts water solubility, while lipophilic portions anchor in oils, making it versatile across rinse-off and leave-on formulations.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 3 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.
Emulsifying agent
Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.

Benefits

Stabilizes emulsions for long-lasting product consistency.

Adjusts thickness for luxurious, easy-to-apply textures.

Improves blend of oils and water for even distribution.

Who It's For

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

Who May Benefit Who Should Avoid
Users preferring creamy lotions and thick creams.
People sensitive to ethoxylated compounds.
Those wanting stable, non-separating formulations.
Those preferring silicone- and PEG-free products.
Individuals seeking smooth, spreadable skincare textures.
Users with known reactions to fatty acid esters.

Safety Notes

  • Rated low hazard by independent assessors when purified.
  • Minimal comedogenic potential in formulations.

Frequently Asked Questions about PEG-150 Pentaerythrityl Tetrastearate

What does this ingredient do in products?

It emulsifies oil-water mixes and controls thickness for stable, smooth textures.

Is it safe for daily skincare use?

Generally low concern from safety reviews, suitable in typical cosmetic levels.

Does it cause breakouts?

Rated non-comedogenic, unlikely to clog pores.