POWERFUL NAIL LAMP: This innovative device features 2 timer settings of 60s and 120s, allowing you to easily and efficiently cure builder gel for nails, nail polish, base coat, top coat, nail extension gel, and more. HEALTHY MATERIAL: btartboxnails XCOATTIPS french protecting builder gel are made of healthy materials. Please Note: Skin test before using, stop using if allergy occurs, avoid eyes and mouth contact. QUICK APPLICATION: Builder gel for nails design with a clear, high self-leveling formula and premium built-in brush, you can easily spread the french XCOATTIPS surface and edge, then cure it under UV lamp for 45-60 seconds to fully dry. The last step is to apply top coat then cure. That's it, you're done!. 30+DAYS LONG-LASTING: btartboxnails builder gel Specially developed for XCOATTIPS, which can provide ultra-protection for french tips, extend french XCOATTIPS longevity for 30+days, and prevent peeling, chipping, fade, cracking, and lifting. PACKAGE INCLUDE: Only include builder gel 15ml and portable nail lamp*1, to protect your french XCOATTIPS, needs to be used with top coat, please purchase top coat separately.