What does panthenol do in skincare?

Panthenol (provitamin B5) is a humectant and emollient that helps skin hold water and feel softer, smoother and less tight. It is a mainstay of barrier-support balms and soothing moisturisers because it leaves the surface comforted and supple. Gentle and well tolerated, it works well alongside ingredients like ceramides, glycerin and centella.