Glycol

Glycol is a simple organic compound that functions primarily as a humectant—a substance that attracts and binds water molecules to the skin. It also acts as a solvent, helping to dissolve and stabilise other ingredients in formulations, and can adjust the thickness of skincare products.You'll find glycol in a relatively small proportion of skincare products (roughly 0.1% of formulations), often as part of a broader moisturising system rather than a standalone active ingredient.

Glycol molecules have a chemical structure that is naturally attracted to water. When applied topically, they bind to water in the dermis and pull it toward the skin's surface, creating a plumping effect and improving hydration levels.Because glycol dissolves many skincare actives effectively, it also enhances the delivery of other beneficial ingredients in a formula, potentially improving their efficacy.

Glycol works best when applied to damp skin, as it helps lock in existing moisture. It integrates well into layered routines and can be used both morning and evening. Because it primarily supports hydration rather than treating specific concerns, it's most effective as part of a complete moisturiser or serum rather than in isolation.

Glycol is generally well-tolerated by most skin types. Some individuals may experience sensitivity, particularly if the product formulation is very concentrated or if skin is already compromised.