Back to Ingredient Dictionary

DIETHYLENE GLYCOL

Description

Diethylene glycol (DEG) is a colorless, odorless, hygroscopic liquid with a sweet taste. It is an organic compound with the molecular formula C4H10O3. In skincare formulations, DEG functions primarily as a solvent and humectant. Its ability to attract and retain moisture makes it useful in products designed to hydrate the skin.

DEG has a low molecular weight, allowing it to penetrate the skin barrier effectively. This property enables it to deliver other active ingredients deeper into the skin. It also helps to improve the texture and spreadability of cosmetic formulations.

However, DEG's use in skincare products is controversial due to potential safety concerns. It has been linked to adverse effects when ingested or used in high concentrations. Regulatory bodies in many countries have restricted its use in cosmetics and personal care products.

When used in appropriate concentrations and formulations, DEG can contribute to product stability and enhance the efficacy of other ingredients. It is often found in moisturizers, serums, and other leave-on skincare products. Formulators must carefully balance its benefits with potential risks, adhering to regulatory guidelines to ensure product safety.