etchall dip n etch is a re-usable etching liquid with the consistency of water. Use by dipping (submerging) glass objects to create an overall etched surface. Can be used with etchmask stencils and etchall resist gel to create beautiful designs. Use on: glass, mirror, ceramic, porcelain, marble, or slate. Disposal: Will not harm plumbing. Flush with plenty of water. Caution: Will etch porcelain sinks and tubs. Neutralize with water and baking soda before disposing in porcelain or ceramic sinks.