Some General Guidelines for Using Erasable Liquid Chalk
Choose a non-porous surface.
Prime your surface by rubbing the side of a piece of chalk across the entire surface and then erase it with a damp cloth.
Some surfaces, such as hand-painted chalkboards, will have some ghosting when erased as with any chalk pen; This can be completely removed with a Mr. Clean’s Magic Eraser.
Don’t want to clean with Mr. Clean? The IOD Erasable Liquid Chalk actually has more erasable qualities than chalk pens; If you’d like to avoid ANY ghosting simply coat your handmade chalkboard with a clear polyacrylic sealer or purchase a manufactured non-porous chalkboard.
Note: Dry times depend on your surface; this product has a generous open (dry) time, so ensure adequate time for thorough drying to avoid smudging.