The loctician Damian Walter has a Dallas location. However, he has several locations around Texas state, so you can call him at 713-320-8520 to see if he is in the area and has availabilities. Other than that, I don’t know of anyone off the top of my head, though.
The good news is that large cities usually have several knowledgable stylists, so Google has a few results too. You can call around and see which seems best for your.
I’m sorry I couldn’t help more!
Followers: Does anyone know of any salons who do loc maintenance in or nearby Dallas, Texas?