Gel Pens for Coloring Books for Adults: What Actually Works and What Doesn't
You've been staring at a wall of gel pen options online, wondering if the $8 set will smudge your mandala the same way the $40 Sakura ones won't. The honest answer is: it depends on the paper weight, the ink type, and what you're actually trying to achieve. This guide breaks down what matters and what doesn't, so you can spend less and color more.
haunh13 min read