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INGREDIENT GLOSSARY • Humectant

Butylene Glycol

butylene glycol
AT A GLANCE
Butylene Glycol

A multi-functional ingredient that can function as humectant, solvent, and slip agent.

Type of Ingredient

Humectant

Why we use it

Butylene glycol, like its cousin propylene glycol, is a multi-talented addition to any skincare formula. It’s a great humectant, meaning it draws water towards itself and helps hydrate and plump the skin. It’s a solvent, so it helps ingredients stay dissolved in a formula. And it’s what’s known as a slip agent, meaning it can help a formula spread more easily over the skin.

What it’s in

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