Copics are alcohol based markers so they will bleed through paper, but unlike water based markers they will not pill up or tear away at the paper

Took a bit more than a few drops to refill as the instructions may imply, but after letting it sit and absorb for a while we are good to go!After refilling if your N8 looks more like an N6, you need to add more ink!Definitely worth refilling the precious copics

Copics are the best!

I love my copics even more now that I've purchases and used the refills firsthand.

Have used Copic for my Industrial Design Sketching for years and the refills keep my expensive copics happy and out of the trash bin.

Love my Copics!

Have used Copic for my Industrial Design Sketching for years and the refills keep my expensive copics happy and out of the trash bin.

Love Copics

Love my copic inks~ refilling my copics makes me happy cuz that' when I realize how cost effective copics really are.

Love copics

Copics good stuff hope it gets here soon coming all the way from Japan via Japan Post

Love Copics!

Love my copics.

Not much to say, copics are the best