toner

noun

• 1an astringent liquid applied to the skin to reduce oiliness and improve its condition.
• [with modifier] a device or exercise for making a specified part of the body firmer and stronger:a tummy toner

• 2a black or colored powder used in xerographic copying processes.
• [usually with adjective or noun modifier] a chemical bath for changing the color or shade of a photographic print, especially as specified:sepia or blue toners