Cures under UV LED in 30 seconds (in platinum pot) Cures under UV Fluorescent in 2 minutes Cannot be applied as a base layer directly onto the natural nail Used to build a solid upper arch that shapes easily - Try Upper Arch Brush Applied as a final layer on a naturally hard nail. Gloss Gel (UV Top Coat Gel) not needed on top of Hard Gel (S-Gel) Hard Gel (S-Gel) can be used to lengthen nails to give a transparent free edge.