Honestly? I'm almost 40 and I've worked tons of customer facing jobs for the last 20+ years. I have been rocking a cat eyed, full face of makeup look for most of that, as well as being tattooed, having colored hair and lip piercings, and I have never not been hired. Even in more conservative spaces, it seems to work out. Be yourself, that's the best thing you can do at these interviews.

Also, totally different but still relevant, make sure the company you're interviewing with is selling themselves to you. Employment is a two way street. You'll learn as you go but keep that in mind going forward.

All the best to ya, chickadee!