?Service Guarantee?btartboxnails products are all brand-new and sealed tightly before shipping out. If the items you received are not brand-new, or they are damaged, defective or missing items, just contact with us via message center, we are here for help. ?Healthy Materials?btartboxnails XCOATTIPS FRENCH PROTECTING DUO are made of healthy materials. Please Note:do skin test before using, stop using if allergy occurs. ?Package Includ?btartboxnails XCOATTIPS FRENCH PROTECTING DUO includes builder gel 15ml*1 and top coat 15ml*1, to protect your french tip area of our XCOATTIPS, applying builder gel firstly before top coat is a necessary step to keep XCOATTIPS long lasting . ?Quick Application?btatboxnails Builder gel and Top Coat Set designs with clear, high self-leveling formula and premium built-in brushes, you can easily spread the french XCOATTIPS surface and edge, then cure it under naiil lamp for 45-60 seconds to fully dry. Last step: apply top coat then cure. One Builder Gel & One Top Coat then go!. ?30+ Days Long-lasting?btartboxnails XCOATTIPS FRENCH PROTECTING BUILDER GEL are made with a professional formula that has been adjusted over many tests, which can provide ultra-protection for french XCOATTIPS, extend the longevity of french XCOATTIPS and prevent fading, peeling, chipping, cracking, and lifting.