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Artificial nails should not be worn by health-care professionals, because they harbor pathogens. Health-care professionals should have short, clean, well-kept fingernails.
Ingredients in artificial nails to watch out for include: 1  Ethyl methacrylate in sculptured nails. 2  Benzophenone in nail gels. 3  Ethyl cyanoacrylate and butylphenol formaldehyde in adhesive. 4  Tricresyl ethyl phthalate in plasticizer.