What does trichology study?

Trichology is a specialized field within cosmetology that focuses on the scientific study of hair, including its structure, function, and various conditions that affect it. This discipline involves understanding hair growth, types, and the factors that can lead to hair disorders. By studying hair, trichologists can diagnose and treat various issues such as hair loss, scalp conditions, and other related concerns. Therefore, the correct answer highlights the essential focus area of trichology, distinguishing it from other related studies like dermatology, which covers skin diseases and conditions.