Amorphophallus Konjac Root Extract

Amorphophallus konjac root extract is derived from the konjac plant, a tuber native to Southeast Asia. In skincare, it functions as both a humectant—a substance that draws water into the skin—and a film former, which means it creates a protective layer on the skin's surface to help lock in hydration.

The extract contains polysaccharides that are responsible for these hydrating and film-forming properties. It's increasingly used in moisturisers, serums, and hydrating products as a natural alternative to some synthetic humectants.

Konjac extract works through two complementary mechanisms. As a humectant, its polysaccharide structure is hygroscopic—it has an affinity for water molecules and draws them from the dermis into the epidermis, thereby increasing skin hydration. This effect is most pronounced when the surrounding environment has adequate humidity.

Simultaneously, the film-forming properties create a thin, permeable layer on the skin's surface. This barrier helps reduce water evaporation, ensuring that moisture drawn into the skin is retained rather than lost. This dual action makes it particularly useful in hydrating formulations.

Konjac extract is most effective when used on damp or freshly cleansed skin, as this maximises its humectant action. It works well layered with other hydrating ingredients and is typically best sealed in with a moisturiser or lightweight oil to prevent the moisture it draws in from evaporating. There is no need to restrict usage frequency; it can be used twice daily without concern.