coloring his face with white lead

'Evidence indicates that Thespis was a professional actor from Icaria in Attica, who won the first tragedy contest in 534 B.C. . . . His major contributions include coloring his face with white lead, introducing linen masks, and creating a single actor (himself) who was distinct from the chorus.'

'Loren K. Ruff, Imitation and Imagination: The Art of the Theatre, 1994.