The way my clipper blades catch the light made me rethink my setup.
I was trimming a fade yesterday and noticed that under the overhead lights, I could see all the tiny details of the hairline. It hit me that I've been working in dim conditions for years, just out of habit (from my night shifts, maybe?). Now I'm adding a small LED lamp to my station, and the difference is huge. Clients are already commenting on how sharp the lines look.