Profinails Rubber Base Hard Gel Clear is a thicker consistency, colourless foundation gel, both strong yet flexible. Also suitable for strengthening your own nails. It can be used to strengthen weak, damaged nails that are prone to breakage. Covers perfectly minor imperfections, ridges and fine lines. When applied in a thin layer, it gives a natural effect. Curing time in LED light ~ 1 minute, in UV light ~ 2 minutes.