Related Clues:

• It gets checked with a stick
• -
• See 123-Across
• Well-gotten gain?
• Suntan products
• Frick collection
• Slippery substance
• Artist's media
• Olive and palm, for two
• Prudhoe Bay find
• Slick starter
• Contents of some barrels
• Change it regularly
• Slick stuff
• With 'of' and 51-Across, a facial moisturizer