IDEA XC - MOSAIC WET is a new impregnating sealer to protect stones against water, oil, grease and humidity giving an attractive wet-look effect. When applied, IDEA XC penetrates into the stone without forming unsightly plastic films. Instruction for use: Surface must be clean and dry. Application can be done by brush or cloth, when possible, to apply the product by brush because it allows the product to penetrate better into the stone. LT. 1