30+ Days Long-lasting: BTArtboxnails nail tips builder gel are made with a professional formula that has been adjusted over many tests, which can provide ultra-protection for french tips, extend french x-coat tips longevity for 30+days, and prevent peeling, chipping, fade, cracking, and lifting. | Quick Application: The nail tip builder gel set design with a clear, high self-leveling formula and premium built-in brush, you can easily spread the french x-coat tips surface and edge, then cure it under UV lamp for 45-60 seconds to fully dry. The last step is to apply top coat and cure it again. That's it! Done! | Package Including: 15ml Nail Tip Builder Gel & 15ml Top Coat & 15ml Gel Nail Glue | Healthy Materials: BTArtboxnails nail tips builder gel set are made of healthy materials. No harm for your nails. | Service Guarantee: BTArtboxnails product is brand new and sealed tightly. If the item you received is not brand new, damaged, defective or has missing items, please don't hesitate to contact us for help. | This Nail Glue Only supports clear nails and xcoattips French Series, Cat eye Series, 2 IN 1 XCOATTIPS Series and Omber Series. The following products cannot be used. 1. press on nails. 2. Any other nail with color from other brands. 3. Xcoattips other solid/plated colors.