Polyglycerin-10

Polyglycerin-10 is a synthetic humectant derived from glycerin, created by linking multiple glycerin molecules together. It functions as both a humectant and skin conditioning agent, helping to attract and retain water in the stratum corneum (the skin's outermost layer).This ingredient is used in relatively low concentrations across skincare products, particularly in serums, moisturisers, and hydrating treatments. Its molecular weight and structure allow it to work alongside other hydrating agents without feeling heavy or occlusive on the skin.

Polyglycerin-10 operates as a humectant by drawing water molecules from the dermis (the layer beneath the skin's surface) into the epidermis, and from the air into the stratum corneum. This water-binding capacity helps to plump the skin and improve hydration levels at the surface.Beyond humectancy, polyglycerin-10 also conditions the skin by forming a light, invisible film that smooths the outer layer and reduces moisture loss. This dual action makes it a versatile addition to hydrating formulations.

Polyglycerin-10 is typically found at concentrations below 2% in skincare products. Apply products containing this ingredient to clean, damp skin to maximise its hydrating potential; the moisture already present will enhance the ingredient's ability to bind water to the skin. It pairs well with other humectants such as glycerin, hyaluronic acid, or panthenol for boosted hydration benefits.

Polyglycerin-10 is generally well-tolerated and has a good safety profile. It is non-irritating for the vast majority of users, though those with very sensitive skin should introduce it gradually as part of a patch test.