INGREDIENT GLOSSARY • Humectant

Propylene Glycol

AT A GLANCE

Propylene Glycol

A common and effective humectant, solvent, and penetration enhancer.

Type of Ingredient

Humectant

Why we use it

Propylene glycol is an ingredient of many talents. 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 a gentle penetration enhancer, meaning it helps active ingredients reach deeper layers of the skin, making them more effective. (At high concentrations, it can also be a preservative, but Stratia products don’t use it this way.)

What it’s in

Liquid Gold, Rewind, Soft Touch AHA, Velvet Cleansing Milk

Shop This Ingredient
2173 reviews

Liquid Gold

skin-strengthening moisturizer
2oz
4oz
476 reviews

Rewind

firming & hydrating serum
257 reviews

Soft Touch AHA

hyper-gentle resurfacing treatment