Related Clues:

• Powder ingredient
• Runner's destination
• 1 on the Mohs scale
• Barber's supply
• Hard-to-refute evidence
• Insertion into a deck
• Sprinter's terminus
• After-bath powder
• Soft end of the Mohs scale
• Soft powder
• Finish line, perhaps
• Stuff is recorded on it
• Barber's powder
• It may be magnetic
• Recording medium