We use the Clean & easy roll on wax system - as it says..Clean & Easy
Approx 20/30mins to heat to a workable temp. Can be transported upright,
roller heads removed & caps placed on for transit[no spilliage/waste]
[ Fab idea for car adapter x ]
Try a search for the waxing unit that has spray on parrafin wax
one end & roll on wax the other - 2 in 1... IMO a good mobile choice.
We tend not to take the parrafin tub with us unless its included in a group treatment[party].
Needs time to heat - can while other treatments are being done .........& cool down so it's not sloshing around in the car. YUK.
XX J XX