Just go in, be yourself and do your best.
I think one thing applicants often forget is that an interview is a two-way process. Obviously you've gone because you're interested in the role, but you also need to make sure that the role, environment, manager all sit well with you and are what you thought they would be - you need to be happy in your work!
The interviewer will always have the upper hand as it's likely they'll have a choice of applicants, but be confident, be honest and show them what you can do. Oh yes, always have a couple of questions to ask so that it shows you're interested (about the salon, their products, the role etc).
Good luck
Debbs x
