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Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate

What Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate is & what it does

A plant-derived emulsifier blend that holds water inside an oil phase, the kind of structure used to build rich, water-resistant sunscreens. It keeps the formula stable so the filters stay evenly spread, and it conditions skin with a smooth, cushioned feel.

What is Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate and what does it do in sunscreen?

It is an emulsifier. In a sunscreen it holds the water and oil phases together, usually building a water-in-oil texture that resists sweat and water and keeps the UV filters evenly dispersed. It is plant-derived, gentle, and adds a smooth, conditioned feel to the cream.

Is Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate safe?

Yes, for cosmetic use. Polyglyceryl emulsifiers like this one are mild, widely used in skincare and sunscreen, and well tolerated at the small amounts a formula needs. It is not flagged as an allergen in our data, so most people use it without any issue.

Does Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate clog pores?

Generally no. It carries no comedogenic rating in our data, which puts it among the lower-risk ingredients for clogging. It works at a low level as an emulsifier rather than sitting on skin as a heavy oil, so it is an unlikely cause of breakouts.

Is Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate fungal-acne safe?

Not strictly. It is a fatty ester emulsifier, and the malassezia yeast behind fungal acne can use that fatty part, so people who are actively managing fungal acne may prefer to avoid it. For everyone else it is harmless. This is one specific skin concern, not a general safety problem.

Is Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate vegan or synthetic?

It is plant-derived and made by joining glycerin-based and fatty-acid building blocks, so it is typically suitable for vegan formulas. The finished emulsifier is processed in a lab rather than found ready-made in nature. That processing is normal for emulsifiers and does not make it any less gentle.

Sunscreens with Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate

We rate 175 sunscreens that contain it, showing the top 10 by overall score:

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