As a cream that helps calm & strengthen barriers in extremely sensitive skin, it works rapidly to soothe and regulate irritated (by heat or sebum), stressed skin. Although the Klair's Midnight Blue Calming Cream is used for targeting smaller areas, It's designed with excellent spread ability so a small amount could cover a large area. The Blue Cream creates a thin, protective layer over the surface of the skin. Night time use is recommended to assist skin regeneration & to prevent makeup from breaking the protective layer.