Washability/erasability varies by type: children's markers are often labeled washable and may wash from skin and most clothing; dry‑erase markers erase cleanly from whiteboards and other nonporous surfaces; chalk or liquid‑chalk markers erase from glass and chalkboards but may stain porous surfaces.
These markers are commonly described for use on whiteboards and most nonporous surfaces, windows and chalkboards; product summaries also note use on car glass, doors, mirrors, and other nonporous surfaces.
Products mention standards such as ASTM D4236 for at least one chalk marker set, AP certified non‑toxic for some highlighters, and CPSC choking‑hazard warnings noted on several children's marker packs.
Dual‑ or multi‑tip markers pair a broad chisel or broad tip with a fine/bullet tip in the same pen, enabling highlighting, underlining, hand lettering, grading, and detail work without switching tools.
Product notes advise shaking before use, capping after use, and storing flat. Chalk markers are described as erasable from glass and chalkboard surfaces; artwork or marks can be wiped off with a damp cloth to erase.
