How often do I need to lubricate my blades?

For best results, apply one or two drops of Wahl Clipper Oil to the blades only as needed, or approximately once a month for consumer products or once a day for professional products. When lubricating your trimmer, turn it on, hold it with the blades facing down, and place one or two drops of oil onto the blades. Wipe off any excess oil with a soft cloth. WARNING: DO NOT OVER-OIL. Excessive lubrication or the application of fluids will cause damage if allowed to seep into the motor.