Classic, Hybrid, Volume, and Mega Volume. Universal, sensitive glue, low Fume, great flexibility and 5-7 Weeks retention. This Adhesive is 1-2 Seconds curing time and can be adjusted for that extra second by using the slightest added amount of glue. It is usable in all ranges of humidity and temperature settings, as well is rounded for all Levels of Technicians placing Classic to Volume Lashes.