Hair follicle is a specialized organ located in the dermal layer of mammalian skin. Contains 20 different cell types with distinct functions. Consists of papilla, hair matrix, root sheath, and bulb. Associated with arrector pili muscles, sebaceous glands, and apocrine sweat glands
Hair grows everywhere except specific body parts. Hair is keratinized epithelium with rope-like filaments. Hair follows three phases: anagen, catagen, and telogen. Average hair grows about 1 cm per month. Thicker hair grows faster than thinner hair
Lichen planopilaris is an itchy scalp rash caused by immune system malfunction. Three types exist: classic, frontal fibrosing, and Lassueur-Graham-Little-Piccardi. Symptoms include scaly skin, hair loss, pain, and inflammation. No cure exists, but treatment aims to manage symptoms and prevent hair loss
Widow's peak is a V-shaped dip in someone's hairline. It's a genetic trait present from birth. Can develop naturally as hairline matures or recedes
Hair transplant starts growing 3-4 weeks after surgery. Day 1: Redness, swelling, scabbing, and itching occur. Day 7: Scabs fall away and donor area hair starts growing. Day 14: Shock loss (telogen effluvium) begins to subside
Sapphire FUE is an improved version of traditional FUE using sapphire blades. Technique uses tiny sapphire blades to create channels for hair grafts. Best suited for larger transplant areas and faster recovery