Propanediol is a three-carbon diol and a colorless viscous liquid that is miscible or mixable with water. Since it's derived from corn sugar, propanediol is a natural alternative to propylene glycol. It can be found in cosmetics and personal care products, like lotions, cleansers, toners, and other topical skin treatments. propanediol can function as a solvent, humectant, and even an emollient when used in skincare.
Propanediol increases hydration when used in hair and body products, When combined with glycerin, Propanediol shows a synergistic effect that reduces the tackiness of glycerin, while offering the benefits of increased levels of hydration.
What does propanediol do for skin?
Improves humectancy: As a humectant, emollient, solvent, and hair and skin conditioner, propanediol pulls moisture into the skin and encourages water retention. As an emollient. Propanediol has the ability to soften and soothe the skin.
Prevents water loss: Thanks to its emollient properties, Propanediol softens, and smooths skin by reducing water loss. Upon application, propanediol forms an occlusive film on the surface of the skin that aids in preventing water loss
Safe for acne-prone skin: Propanediol can increase foaming in a product, so those prone to breakouts might prefer products containing the ingredient for that reason.
Enhances preservative efficacy: Propanediol can also function as a preservative booster in skincare products.
Gives the product a lightweight feel: Propanediol contributes to the consistency of a product as well, it gives products a light texture and a non-sticky feel.