Parafin wax hand therapy

After my thumb surgeries, physical therapy included dipping my hands in hottish parafin wax to coat, then wrapping them in hot towels. It was heaven after an intense therapy session! I feel this will benefit my hands after a bass lesson. I looked online at wax setups, but the units that melt the wax are set at crazy hot settings, 160*! (I cook using the Sous Vide method, and steak is cooked at 132*). I don’t want to cook my hands, so I figured I’d use my crockpot that’s just sitting around. That’s what my therapist used. Guess what I’m asking is anyone else use hot wax therapy? What parafin do you use?