Nail technicians see their clients’ nails and cuticles up close all the time, and the things they’ve learned about maintaining healthy nails can be revealing. HuffPost reached out to nail technicians and nail artists about what they would never do to their own nails after their many years of experience in their industry. They share their own personal “won’ts” around hygienic, sanitary standards and whether they would do certain nail trends on their own nails.

1. Bite nails “One big thing I would never do to my own nails is biting them! I think it’s safe to say why not ― it’s unsanitary. It gives me the chills thinking about doing it.

” “There are many people out there who do not wash their hands properly and especially underneath their nails. ..

. It’s satisfying to clean out [the debris around and underneath their nails], but seeing that makes me wonder if people who bite their nails really know what they’re putting in their mouth. The majority of my clients say they have done it out of anxiousness, and I do not judge these people, but I can’t do it myself.

” ― Christina Tran , Los Angeles-based nail artist 2. Get a pedicure at a salon where you don’t know if the jets have been disinfected “Unsanitary whirlpool jets are usually to blame when clients get infections from pedicures. Unless I know for sure that the jets are being disinfected after each client using state board[-approved] procedures, there’s no way I’m putting my feet in there.