Long Lasting Gel Nail Glue & Tip Primer Set: BTArtbox nail gel glue kit includes 1PCS 15ML Tip Primer and 1PCS 15ML gel glue for nails. With this kit，you can achieve nail extension easily within 3 minutes then get super durable & strong adhesive nail enhancement. No more falling off.No more popping off.Long lasting till 3-4 weeks. | Buff Finish Effect with Tip Primer: BTArtbox Tip Primer chemically etches the underside of nail tips to create perfect pre-buff surface for nail gel glue application and better adhesion.No more e-file needed, you can easily get pre-buff nail tips which are almost equal to e-file buff finish nail tips with our tip primer within seconds. | 4-in-1 Multifunctional Gel Nail Glue: Just extend your nails in 3 minutes with BTArtbox uv nail glue gel and show them off for more than 28+ days！The multi-functional nail gel glue are not only for nail tips adhesive, but also can be used as gel base coat/rhinestones glue/slip solution, etc. | Healthy Material with SGS/MSDS Standards: BTArtbox nail glue gel kit are in strict production compliance with SGS and MSDS standards.They are made from natural resin and healthy ingredients, mild and non-irritating odor, no impurities, vegan & cruelty-free, non-toxic and harmless to nail & skin. Perfect for nail salon use or home DIY. | Warm Tips for How to Use: After applying BTArtbox brush on nail glue gel on nail tips and sticking it to your nails, it will need 90 seconds curing under nail lamp to dry out.It makes the nail tips stick more firmly to your nail beds.If there is any question or problem, please feel free to contact us,we will do our best for you.