Roll on wax problems your input needed (gigi type)

Hi,
I’ve been tasked with designing a new Roll On wax system like the Gigi Speed Wax system. I’m a guy with no waxing experience except for the local salon visits I’ve made during research. Goal: Design a roll on wax device that is Sanitary according to the State Board, easy to use and clean, and is economical for the Salon owner. If you’ve ever wanted to complain to someone about your experience with these systems I’m all ears! If you have any pictures of messy roll on wax bottles or systems I’d love to see them! If you have any ideas, nothing is too crazy. Thanks.

I love the hygenic waxing system that I use, however, it is only made for soft wax. If you could design one for hard wax? By the way, I would suggest that you get some experience being waxed by the many systems that are out there already.

I guess I have one more suggestion. A cool wax or one that does not have to be heated would be superb. I hate having to wait for the wax to warm up and some people are sensitive to the minimal heat used.