When applying nail enhancements (such as artificial nails or gels), good practice is to:

Nail enhancements (artificial tips, acrylics, gels, etc.) should be applied only to healthy nails — not over infected, damaged, or diseased nails — and the cosmetologist should follow the product's directions, work safely, and ensure proper ventilation, since some enhancement products have strong fumes and chemicals. Applying enhancements over an infection can trap and worsen it. Knowing to assess nail health first, follow directions, and maintain ventilation reflects the safety-and-scope mindset the exam reinforces for nail enhancement services.