Shills Professional Builder Gel is a salon-grade hard builder gel designed for strong nail extensions, overlays, and nail strengthening. Available in 30ml and 50ml sizes and 5 essential shades – White, Pink, Nude, Peach, and Clear – this UV LED builder gel is perfect for professional nail technicians and advanced home nail artists. This thick self-leveling builder gel provides superior control during application, allowing you to sculpt flawless nail extensions, create apex structure, and build durable overlays. The high-viscosity formula prevents flooding and ensures smooth shaping for coffin, almond, square, and stiletto nail extensions. Whether you're creating French nail extensions with white builder gel, natural overlays with nude builder gel, or crystal-clear encapsulated nail art using clear builder gel, Shills Professional Builder Gel delivers long-lasting, chip-resistant, salon-quality results. Compatible with UV & LED lamps, this hard extension gel cures to a strong, non-flexible finish ideal for professional nail extension systems.