Help installing foam grips!

I've never changed grips before on a bike. I'm restoring an old Schwinn Varsity and got rid of the cruiser handlebars and bought mountain bike bars and some cheap foam grips .

How do you get them on? Do you have to use two sided tape and ligher fluid like when putting on golf grips. Any help appreciated

 

Hairspray. Just enough to get them on, let it set up overnight. You will need to cut them off but they will never slip.

 

I have used hairspray to do it, may not be the best way but it was functional.