Christrio BASIC ONE Brush-On Gel - 4oz / 118ml by Christrio. $42.95. Want a permanent, yet fast topcoat? Our BRUSH-ON gel is quick, easy-to-use, remarkably shiny, requires 1 minute cure, NO SHRINKING, NO WRINKLING, and highly durable. Works great over acrylic, polish, silk, fiberglass, and extraordinary on toes! Also great as a quick touch up for gel nails or to buy time between fills!