Thunder Lash Adhesive 5 ml – 0.5 s | 6–7 Wks | Medium-Thin | 40–55 % | ProElite Speed Standard Advanced Use You've Outgrown Your Glue. You just haven't admitted it yet. There's a moment in every technician's growth where the adhesive stops feeling like a tool and starts feeling like a delay. Your hands are moving faster than your glue is curing. You're holding fans in place longer than you should. You know where the extension is going before it gets there and you're waiting for the bond to catch up. That's not patience.