Xylitol, a humectant like glycerin, has been shown in studies to hydrate and help reinforce the skin's barrier. It functions as a humidifier, extracting moisture from the air for absorption by the skin.

Xylitol, able to suppress harmful factors in the skin, which also plays an important role in normalising skin and the keratinocytes phase (whereby skin cells move from the lower layer to the surface of the skin).

It is also said to have a soothing and anti-microbial effect.

See also:
Emollient
Humectants
Occlusives