This has happened to us all at one time or another. Just curious to see how everyone handles these inconvenient little situations that ruffle our feathers.
I turn the wax on the highest setting and scrape the sides of the can with applicator. When the wax starts to soften I turn it back down to the normal setting.
It takes about 15 minutes for my satin smooth soft wax to get heated so I turn it up and scrape the outsides till its ready. By then I've got front, butt, and most of the labia done and my hard wax will be ready to tackle the pubic bone region.
I'll chat them up until the wax at the sides is ready to use. This happens frequently with one client who comes first thing in the morning on Fridays every other week for a nose wax (so, hard wax only), and she's always early! I try to be early too, but she just keeps getting earlier, LOL, so oftentimes I am letting the wax heat while I chat with her and roll my towels for that day's facials, etc. The actual waxing is super quick (I'm usually finished with her appointment before it even starts since she's early), so I don't mind as it never cuts into my next session.