Propylene glycol has multiple functions and is used in a variety of skin care products due to its versatility. Here are its main functions:
Water absorption: At low concentrations, Propylene glycol acts like a humectant, Zeichner says, meaning it binds to water and absorbs it into the outer layers of the skin. When used in cosmetics, it helps give skin a dewy, dewy look.
Promote other ingredients: Due to its binding properties, propylene glycol can enhance the delivery of other active ingredients to the skin.
Gently moisturizing: As a humectant, it also moisturizes and soothes the skin with a light, non-sticky feel, Herrmann adds.
Tackle obvious signs of aging: Its moisturizing properties also make it a useful ingredient for dry or aging skin. "As we age, our skin loses an ingredient called natural moisturizing factor (NMF) and subsequently dries out, which exacerbates wrinkles and leads to peeling and roughness," Herman says. "Propylene glycol helps bind water in the environment and helps combat the water loss that comes with aging."
Enhanced penetration: Zeichner says it helps the active ingredients in cosmetics penetrate the skin, making them more effective.
Prevent water loss: Propylene glycol acts as an emollient and forms a protective layer on the skin that prevents water loss and helps smooth and soften the skin, according to Herrmann.
It's safe for acne-prone skin: Because it's not greasy, Herman says it's great for people with acne, too.
Helps reduce spots over time: Due to its moisturizing properties, propylene glycol can nourish the skin and help reduce marks and the appearance of acne spots.
Propylene glycol
Ingredient type: moisturizer, solvent, emollient and preservative.
Main benefits: Absorbs moisture and locks it in the skin.
Who should use it: In general, anyone seeking extra moisturizing and smooth skin.
How Often you Use it: Propylene glycol is a safe ingredient that can be used regularly, provided you're not allergic to it.
Works well: Because it has so many functions, there is no specific list of ingredients that goes well together.
Don't use: Propylene glycol works for most, if not all, ingredients.
