Hair care under dermatology focuses on maintaining scalp and hair health through proper cleansing, conditioning, and treatment of underlying scalp conditions. Dermatologists emphasize gentle hair washing with appropriate shampoos to prevent dryness and dandruff, while avoiding harsh chemicals that can damage hair follicles. They recommend regular scalp inspections to detect issues like psoriasis, seborrheic dermatitis, or fungal infections, which can impair hair growth. For hair loss concerns such as androgenetic alopecia or alopecia areata, dermatologists may prescribe topical minoxidil, oral medications, or recommend hair transplantation procedures. Addressing scalp psoriasis or dermatitis involves medicated shampoos containing ingredients like salicylic acid, coal tar, or corticosteroids to reduce inflammation and scaling. Proper nutrition, avoiding excessive heat styling, and minimizing chemical treatments are also advised to preserve hair integrity. In cases of hair shaft disorders like trichorrhexis nodosa or hair breakage, dermatologists may suggest specific treatments or hair care routines. Overall, a tailored approach combining medical therapies with appropriate hair care practices optimizes scalp health and promotes healthy hair growth, emphasizing the importance of professional guidance in managing hair and scalp conditions effectively.