Ingredient dictionary

Polyglyceryl-4 Caprate

Polyglyceryl-4 Caprate is a gentle nonionic emulsifier made from polyglycerol and capric acid. It helps oil and water mix and lifts away oil-based dirt. It is on the label of 10 products in our library. Checked against our library November 6, 2026.

What Polyglyceryl-4 Caprate does

Helps oil and water blend together
Lifts oil and makeup off the skin
Helps cleansers rinse off cleanly

Polyglyceryl-4 Caprate is made by joining a short chain of glycerol units, called polyglycerol, to capric acid, a fatty acid common in coconut and palm kernel oils. The result is a nonionic ester, meaning it carries no electrical charge. That makes it a mild partner in water-based formulas, where it helps oils disperse.

Formulators use it as an emulsifier and cleansing agent. In micellar water, it forms tiny clusters called micelles that surround oil and makeup so they can be lifted off with a cotton pad. In cleansers, it helps the product rinse off cleanly. Its texture is usually light and fluid, so it blends easily into a formula.

Good for

Suits gentle cleansers and micellar waters for everyday removal of makeup and light oil.

Frequently asked questions

Is Polyglyceryl-4 Caprate safe for sensitive skin?

It is generally considered mild and is often chosen for gentle cleansers. Like any ingredient, it can still bother a particular person, so a patch test is a sensible first step. If you notice redness, stinging, or itching, stop using the product and check with a dermatologist.

Is Polyglyceryl-4 Caprate plant-derived?

Often, yes. Its fatty acid part, capric acid, is commonly sourced from coconut or palm kernel oil. Exact sourcing can vary by manufacturer, so check the supplier's details if origin matters to you.