How to Change Colorists in Same Salon?

I’m in a situation where I think I’m going to have to switch colorists in the same salon, which I know can be tricky.

A year ago, I moved from the city to a small town. I’ve been having my hair bleached platinum (from medium brown) for years, and I felt lucky to find a good colorist here. But after less than a year, my new colorist told me she was moving away. She referred me to another colorist in the same salon, telling me that she was a great colorist.

I’ve seen the new colorist a few times now, and I’m not too happy with her work. I really wonder if she even knows what she’s doing. My roots have turned out too gold, and now I’m noticing a fair amount of breakage around my face. I don’t think she’s applying the bleach carefully enough. She seems a bit sloppy with it.

I’m going to have her switch back to 20 volume bleach, and I hope that makes a difference in terms of the breakage. The colorist who moved away used 40 volume, but I’m just not comfortable with that.

How would I go about changing colorists in the same salon? This is really the only hair salon in this town, and it does have a good reputation. The new colorist insists she knows how to bleach hair. I don’t want to hurt her feelings, but it’s my hair. I also don’t know if anyone else would do a better job, though. I wish the last colorist had given me a few choices of colorists to interview, and let me decide on whom to hire. But I really don’t even know what questions to ask of a new colorist.

Thank for any advice.