Cleyera Japonica Leaf Extract

Cleyera japonica leaf extract is derived from the leaves of Cleyera japonica, a flowering plant native to East Asia. In skincare formulations, it functions primarily as a humectant—an ingredient that draws water from the environment and deeper skin layers into the outer epidermis, helping to improve hydration and skin moisture content.This extract contains water-soluble compounds that contribute to its humectant properties. It is typically used in concentrations that allow it to integrate easily into serums, toners, and moisturisers without altering product texture or stability.

Cleyera japonica leaf extract works by drawing water molecules into the stratum corneum (the outermost layer of skin) through osmotic action. This process is known as humectancy and is one of the fundamental mechanisms for improving skin hydration and plumpness.By increasing water content in the outer skin layers, the ingredient can help reduce the appearance of dryness and support the skin's natural barrier function, provided the skin remains adequately sealed with an occlusive or emollient layer above it.

Cleyera japonica leaf extract is most effective when applied to damp skin, as this increases the amount of water available for the humectant to draw into the epidermis. Follow with an appropriate moisturiser or occlusive product to seal in hydration and prevent transepidermal water loss. It can be used daily as part of a standard skincare routine.

Cleyera japonica leaf extract is generally well-tolerated across skin types. Patch test if you have sensitive skin or known plant allergies.