Pro tip: check your bleach powder before you start a full head highlight
I was in my booth at Shear Magic in Omaha, halfway through mixing my lightener for a client's highlights. The powder felt weirdly clumpy, and when I checked the date on the tub, it was from over a year ago. I had to stop everything, apologize to my client, and run to the supply closet for a fresh batch. It set us back about 20 minutes and totally threw off my timing. Has anyone else had a product just fail on them mid-service like that?