On Jul 7, 2:00*pm, "Michael" wrote:
Does anyone know how to remove Crayola Invisible Marker from ivory piano
keys? Warm soapy water didn't work.
Thanks

For something like this I'd start with the most gentle technique then
get more agressive if the stain persists.

First try a poultice of baking soda and water for 24 hours under saran
wrap.

If no success then try making a poultice out of baking soda and
peroxide or diatomacious earth and peroxide (12% solution) to the
consistency of peanut butter.

If no luck try mineral spirits on a WHITE paper towel under saran wrap
for 24 hours.

If no luck try same with acetone.

For all of the above put a 1/4 inch thick pile of (either WHITE paper
towel or baking soda medium or diatomacious earth medium) over the key
then seal it with saran wrap to prevent evaporation, let it sit 24
hours, if you are lucky it will leach the stain out of the ivory. If
the stain did not disappear fully, but did disappear a little, then
repeat.

I'd try bleach last though.