Polyglyceryl-10 Isostearate

What is Polyglyceryl-10 Isostearate?

Polyglyceryl-10 Isostearate is an ester formed by linking polyglycerol-10, a polymer of ten glycerol units, with isostearic acid, a branched fatty acid derived from vegetable oils like rapeseed or olive. This structure gives it hydrophilic and lipophilic properties, classifying it among polyglyceryl esters used in cosmetics. Primarily functioning in emulsion-based products such as lotions, creams, and cleansers, it stabilizes oil-in-water mixtures by creating a protective film at the interface between phases. This prevents separation, ensures uniform consistency, and enhances product spreadability. As a mild surfactant, it aids in gentle cleansing without stripping skin, while its emollient qualities contribute to a silky feel during application. Its branched chain reduces greasiness, making it ideal for lightweight formulations across various product types.

Comedogenic Rating 0/5 Low risk of clogging pores

EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Emollient

Softens and smooths skin by filling in surface roughness and improving slip; can also help reduce moisture loss when paired with occlusives and film formers.

Surfactant

Lowers surface tension to enable cleansing, emulsifying, and foaming; central to shampoos, body washes, and many emulsions and micellar systems.

Emulsifying agent

Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.

Skin conditioning agent

Maintains skin softness, smoothness, and flexibility.

Benefits

Softens skin surface for improved smoothness and comfort.

Stabilizes product formulas to maintain even texture over time.

Enhances skin conditioning to support flexibility and hydration retention.

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 with dry or rough skin using moisturizers.	Those with rare allergies to fatty acid esters.
Users of sensitive skin products seeking mild emulsifiers.	Individuals sensitive to polyglycerol derivatives.
People preferring non-comedogenic ingredients in daily routines.	People avoiding ester-based surfactants in formulations.

Safety Notes

Considered low hazard with minimal risk in cosmetic use.
Non-comedogenic profile supports use on pore-prone skin.

Frequently Asked Questions about Polyglyceryl-10 Isostearate

What role does Polyglyceryl-10 Isostearate play in products?

It emulsifies oil and water phases for stable lotions, creams, and cleansers while softening skin.

Is it suitable for sensitive skin?

Its mild nature and low hazard rating make it appropriate for many sensitive skin formulations.

Does it contribute to acne?

With a comedogenic rating of 0, it is unlikely to clog pores.