The document discusses nail anatomy, physiology, growth, and factors that determine nail beauty. It covers general nail health measures and care items like instruments and cosmetic products. Potential adverse effects of nail cosmetic procedures are outlined, including reactions to nail polish, removers, and artificial nails. Maintaining proper nail care and understanding potential issues is important, as unattractive nails can cause psychological distress, and certain nail conditions may be improved through cosmetic measures and dermatological guidance. Dermatologists should recognize nail care's role in patients' well-being and self-esteem.