With blush trending, a product that has seen a major resurgence is cheek stains.Popular in the ‘90s and early ‘00s, blush tints are known for having sheer, buildable coverage and a natural ...

Faint purple stains (arrow) caused by gold spheres invisible to the naked eye mar decorations on structures in Spain’s Alhambra palace. The blue color is the pigment lapis lazuli. C.