Polyglyceryl-6 Polyhydroxystearate
INCI: POLYGLYCERYL-6 POLYHYDROXYSTEARATE
Reviewed by Kate · Last updated 2 Jun 2026
Also known as: Polyglyceryl-6 Polyhydroxystearate
A synthetic emulsifier that helps blend oil and water in skincare formulations
Best For Skin Types
All
Usage Frequency
Daily
Polyglyceryl-6 Polyhydroxystearate products at Skintique
View all →What Is Polyglyceryl-6 Polyhydroxystearate?
Polyglyceryl-6 polyhydroxystearate is a synthetic emulsifier derived from glycerin and fatty acids. It belongs to a class of ingredients known as polyglyceryl esters, which are widely used in cosmetic formulations to stabilise mixtures of oil and water-based ingredients that would otherwise separate.
In skincare products, this ingredient works to create stable emulsions — the creams, serums and lotions that combine both hydrating and nourishing components into a single product. It is found in approximately 0.2% of skincare formulations, typically at low concentrations.
How It Works
Emulsifiers like polyglyceryl-6 polyhydroxystearate have a molecular structure with both water-loving (hydrophilic) and oil-loving (lipophilic) regions. These molecules position themselves at the boundary between oil and water phases, reducing the tension between them and allowing the two to mix evenly.
This stabilising action prevents creams and lotions from separating into oily and watery layers, which maintains the product's consistency, texture and efficacy throughout its shelf life.
Clinical Evidence & References
Polyglyceryl-6 polyhydroxystearate is a well-established emulsifying agent with a long history of use in cosmetics. Its safety profile is generally well-documented in cosmetic ingredient databases and regulatory assessments.
However, specific clinical studies examining its direct effects on skin health are limited. Its primary role is functional — to stabilise formulations — rather than to deliver a direct active benefit to skin. Any skin benefits would be indirect, arising from the overall stability and effectiveness of the product it is formulated into.
How to Use
This ingredient requires no special application on the consumer's part; it works behind the scenes in finished products. Simply use the product as directed by the manufacturer. If you are concerned about ingredient sensitivities, patch test the product before full application, as with any new skincare product.
Safety & Precautions
Frequently Asked Questions
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Polyglyceryl-6 Octastearate
Comprised of vegetable fatty acids | Skin conditioning ingredient
Polyglyceryl-6 Oleate
The ester of oleic acid and humectant polyglycerin-6 | Versatile performance as an emollient, surfactant and emulsifier
Polyglyceryl-6 Olivate
A plant-derived emulsifier that helps blend oil and water in formulations
Polyglyceryl-6 Polyricinoleate
An emulsifier derived from castor oil that helps stabilise skincare formulations
Polyglyceryl-6 Ricinoleate
Ester of polyglyceryl-6 and ricinoleic acid | Serves as an emollient and surfactant
Polyhydroxystearic Acid
Often used to coat mineral sunscreen active ingredients to help them disperse evenly | Other roles in skin care include emulsion stabiliser, film-former, and texture-enhancing thickener
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