I am reading Agatha Christie's Peril at End House. Can anyone help me understand what "her face was innocent of make" means in the following paragraph?
It was, I think, her appearance of calm good sense that so attracted me. A quiet girl, pretty in the old-fashioned sense-certainly not smart. Her face was innocent of make-up and she wore a simple, rather shabby, black evening dress. She had frank blue eyes, and a pleasant slow voice.