IKEA whiteboard markers do not smudge the otherwise highly soluble ink! Staedtler markers for comparison. They bleed through the paper though. Are all whiteboard markers as well behaved over water based inks
Amazon.com: 2 X Ikea MÅLA Kids Children Drawing 59" Reversible White/Black Board Softwood Easel : Toys & Games
Whiteboard desk - IKEA Hackers
MÅLA Whiteboard pen with holder/eraser, mixed colors - IKEA