Having to sign a client consultation form on your first visit is a good indicator that the salon is operating at optimal cleanliness, says McCallum. "Your technician should also use brand-new nail files for every client," she adds. "Nail files are so inexpensive there is no reason not to have a new one for each client."
Another good sign? "That they don't re-use toe separators," McCallum says. "They should either give them to each client or use a disposable method."