How can I make wood drawers open easier?

Question

They are large kitchen drawers, about 6" deep. This apartment has been painted & painted & painted. How can I make the kitchen drawers open & close easier?

Answer 1

Rub candle wax on the rollers. Works every time.  

Answer 2

rub the contact surfaces with a plain white candle, or bar soap. If the contact surfaces have been painted try removing the paint down to the bare wood first.