... long nail extension 3) Without hot feeling 4) UV cure UV GEL professional producer, wtih more than 8 years history ... OEM & ODM serviceCertificateMSDS,SGSFeatures:1,High quality UV builder gel with no odor,no color,like ... Apply a thin layer of base gel, cure 1min with UV lamp or 30sec' with LED lamp.3 ... ).Apply the builder gel, cure 1~2min. 4).Apply 1 layer top coat, cure ...