Glue-in hair extensions?

I bought human hair at Sally’s, as I had planned on getting them sewn in. (The girl who was going to do it flaked on me!)
So, now I have this hair. It’s ‘Sassy’ brand, wefted.
Can I cut bits off the weft and glue them onto my own hair? What glue is best (Liquid Gold? Super Bond?) and where can I get it? CAn the glue be used to heat-bond them? If so, can I use a curling iron or flat iron for that or do I have to use a fusion tool? How long should I expect them to last if they’re just glued, not fused?
Thanks in advance!

no, you can’t. They use wax in saloons. I chose to buy clip in extensions, the part of the hair were it’s like swen together is left and you just sew in clips which you can by over the internet or at a saloon. then you can take it out when you want to and the hair will last longer because you don’t sleep with it on..e-mail me if you want to see a photo…