Etchall® etching cream is a reusable cream that produces a white opaque, permanently etched finish on glass, mirror, ceramic, porcelain, marble and slate.
The Art and Craft Material Institute has approved that etchall® etching cream can be used by children 12 years and older, children younger than 12 must be supervised by parents. It conforms to ASTM-D4238.

Reusable: Yes

Disposal: When disposing of the etchall® etching cream, rinse with plenty of water neutralized with baking soda. This way it will not be harmful to the plumbing.
Note: etchall® etching cream will etch porcelain or ceramic sinks.