Glycerin: Diving into a timeless, skin-quenching ingredient.

In this Skin Deep Summer Issue feature, I spotlight glycerin—an unassuming yet powerhouse ingredient that’s been quietly transforming skincare for centuries. From enhancing hydration and fortifying the skin barrier to accelerating healing and smoothing fine lines, glycerin proves that simple ingredients can deliver profound results. This article traces its origins, explains its function, and highlights why it remains a staple in everything from serums to cleansers across all skin types.