And it's easier to do them all at once (in spring cleaning style) than cleaning them one at a time.
Pop in a good movie and sit down with your markers and a few basic supplies.
I have a small 4 ounce jelly jar (warning: Amazon affiliate link there) that I fill with 90% rubbing alcohol from the pharmacy aisle of my grocery store. The 70% alcohol works too but the 90% works faster.
Into that jar, I cut small 1 inch squares of clean paper towel.
This jar of teeny tiny wipes and a pair of tweezers are all you need to clean your entire marker collection!
Now keep in mind, rubbing alcohol is a different kind of alcohol than the alcohol in your Copics. These alcohols are not interchangeable or compatible!
Rubbing alcohol also has some water in the mix. That’s what the % on the label indicates. 90% Rubbing Alcohol is also 10% water. 70% Rubbing Alcohol is 30% water.
Because of that water content, I'm super careful when wiping off the plastic right below the marker nib.
Rubbing alcohol is not good for your nibs!
But aside from that one caveat, rubbing alcohol makes an excellent cleaner. It dissolves Copic jelly on contact, and it's soooo much cheaper than cleaning with Copic Colorless Blender!
First, wipe the marker off with a little tiny square of alcohol-soaked paper towel.
Then plunge the same square into the marker cap and ream it around with the tweezers to clean the inner cap area.
Tap the excess alcohol out of the cap, recap the marker, and move on to cleaning the next marker with a clean square.
It's an easy-peasy process and you can clean even the biggest marker collection before the movie is over!