If you opt to let professionals handle your nail care, be very careful when choosing a nail shop. You should look for a place that's well lighted, clean, and offers licensed cosmetologists to do your work. It's better to do a little homework than to have something go wrong.
Hygiene is an extremely important part of any nail care salon, due to the potential for spreading infection. Make sure that your manicurist always uses brand new buffing blocks and emery boards, and that all metal tools are disinfected immediately after use.