• Apple Barrel Gloss Acrylics dry with a beautiful shiny, gloss finish. Created with a sealer built into the paint formula, there is no need to add varnish or spray finish. However, should a layer of extra protection be desired, apply a brush-on water-based varnish, or a couple light mists of a clear acrylic spray sealer for protection. Keep in mind, the layer of protection may change the sheen from the gloss finish of the paints, depending upon the type of product used.