1. the professional skill or practice of beautifying the hair, skin, and nails

Examples

• She enrolled in cosmetology school to become a licensed hairstylist.
• The cosmetology program includes training in hair cutting, coloring, and styling.
• After graduating from cosmetology school, he opened his own salon.
• Cosmetology students learn about skin care and nail treatments.
• The state requires a license to practice cosmetology professionally.
• She has been working in cosmetology for over ten years.