Minerals are the latest thing in makeup. Their popularity has come about in part due to the fact that the foundation has very few ingredients, and those being inert minerals, tend to be perfect for people with allergies or sensitive skin. Brush on minerals with a big, puffy brush, building up layers of nearly-invisible powder. Advertised as a "soft-focus" look, mineral makeup has been compared with the airbrush in creating a flawless appearance.