If the bottom blade does not pop out easily, use a pair of tweezers to pull it off the base. Take note of how the pieces fit together, and how the blades are positioned in relation to each other, to make reassembly easier.

Some people report success with isopropyl alcohol, although you may need to find a strong, 90% alcohol solution. [2] X Research source Weaker isopropyl alcohol might not work.

If the rust is difficult to remove by scrubbing, you may need to replace the blade.

For best results, apply a couple drops of hair oil before testing. (This is recommended after every second or third session. )

A strong, flat magnet may work instead. Sharpen slowly if using this device, to prevent the blade from falling off the magnet and potentially nicking you. Sharpen both blades using the steps below, one at a time.

If you are using a ceramic blade, you’ll need a diamond sharpening stone instead. Read the label carefully, and don’t confuse sharpening stones made from ceramic with sharpening stones that can sharpen ceramic.

While an alternate light, penetrating oil can work instead, avoid heavy, dark oils which can clog the blades. [4] X Research source You might want to check with a barber or online before using a new oil for the first time.