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Polyglyceryl-4 Isostearate

* An emulsifier

* Also known as Tetraglyceryl monoisostearate


Polyglyceryl-4 Isostearate is a plant-based emulsifier used in cosmetics and skin care products to stabilize formulas. One of its main components, Isostearic Acid, is a mild fatty acid also seen in many cleansers and cosmetic powders. Little information is available regarding Polyglyceryl-4 Isostearate, although it does appear in many products as a primary emulsifying agent (, a cosmetics company, and The National Institutes of Health).

Safety Measures/Side Effects:

Polyglyceryl-4 Isostearate is considered a low hazard ingredient by the Cosmetic Database, noting only data gaps as a concern. No studies were found that noted any adverse reactions or side effects upon using this ingredient in cosmetic or skin care formulas.

Recommended Products w/ Polyglyceryl-4 Isostearate:

tarte ReCreate Wrinkle Rewind Technology with SPF 15, Dermacia Lycogel Melt Resistant Foundation, Skyn Iceland’s The Antidote Mineral Sunscreen, Physician’s Formula Mineral Wear Talc Free Powder and Tinted Moisturizer with SPF 15
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