Electric blackhead artifact $ 14.80 Color Classification: Upgrade battery version (free 4 tips) Upgrade charging version (free 6 tips) Power supply: plug Charging gear: 3 gears Steps for usage 1. Hold the instrument, rotate it clockwise, and gently pull the tip. 2. Unplug the filter, and you will see the sponge filter. 3. Prepare a new sponge filter and seal. Remove the old sponge filter and replace it with a new sponge filter.