Ingredient

Polyglyceryl-4 Isostearate

Positive in 1 product Neutral in 2

What is Polyglyceryl-4 Isostearate?

Polyglyceryl-4 Isostearate is a synthetic emulsifier often used in cosmetic and skincare products, made by combining glycerol and isostearic acid. This process results in a compound that helps blend ingredients that typically don't mix well, like oil and water.

In sunscreens, it's commonly used to ensure a smooth and even application, improving the texture and moisture retention of the product. The health evidence relating to its safety is generally positive, with no widely recognized adverse effects linked to its use in cosmetics.

When you see Polyglyceryl-4 Isostearate on a label, it usually indicates an effort to stabilize the formulation and maintain consistent product quality across its shelf life.

Commonly found in: Sunscreens, Moisturizers, Lotions, Creams

Benefits

Helps emulsify and stabilize the mixture of oil and water.
Improves the texture and application of products, such as sunscreen.

FDA

The FDA lists it as a generally safe ingredient for use in cosmetic products.

Research

Research shows it is effective as an emulsifier without significant safety concerns.

Vegan

Polyglyceryl-4 Isostearate is typically considered vegan as it's synthetically derived.

Sources: Safety Assessment of Isostearic Acid and Its Salts and Esters as Used in Cosmetics

Scout's take

Polyglyceryl-4 Isostearate is an emulsifier that helps to blend oil and water-based ingredients. It is used to improve the texture and stability of cosmetic products. It is considered safe for use in cosmetics.