If you're auditioning for a student film-most of them are shot outdoors with handheld cameras and no lighting-make sure you wear a little less makeup, a little less powder in particular.

Bronze Powder: an inert alloy of copper and tin providing a blend of properties that assists with the demands of the industry for wear and noise reduction.

Of the problems of tube wear with powder, the influence of particle size, concentration and pressure of carrier gas on erosion was studied.