Tea-PCA

Tea-PCA is the triethanolamine salt of pyroglutamic acid, a naturally occurring amino acid derivative. It functions primarily as a humectant—a molecule that attracts and binds water to the skin—whilst also serving conditioning and protective roles in skincare formulations.This ingredient is valued in cosmetics for its ability to help maintain skin hydration and support the skin's natural moisture-retaining mechanisms. It is typically used at low concentrations in serums, moisturisers, and hydrating treatments.

Tea-PCA works as a humectant by attracting water molecules from the environment and deeper skin layers, drawing them into the outer layers of skin. This hygroscopic property helps increase skin hydration and plumpness.Beyond hydration, the ingredient's amino acid structure supports skin conditioning—improving the skin's texture and appearance—whilst its protective properties may help reinforce the skin's barrier function and resilience against environmental stressors.

Tea-PCA is typically incorporated into serums and moisturisers at low concentrations. It works well in layered routines—apply to damp skin before heavier creams to optimise its hydrating effect. It pairs well with other humectants and hydrating ingredients, and can be used daily as part of morning and evening skincare routines.

Tea-PCA is generally well-tolerated and considered safe for topical use in cosmetics. It is suitable for most skin types, including sensitive skin, though those with known sensitivities to amino acid derivatives should patch test first.