Hair Transplant — How It Works, Benefits & Recovery — Procedure Guide, Recovery & Risks | MyMedicPlus

A hair transplant is a surgical procedure that permanently redistributes hair follicles from a 'donor' region — the back and sides of the scalp where follicles are genetically resistant to dihydrotestosterone (DHT) and therefore permanent — to bald or thinning 'recipient' areas affected by androgenetic alopecia (pattern baldness). Two principal techniques are used: follicular unit extraction (FUE), in which individual follicular units (each containing 1–4 hairs) are extracted one by one from the donor scalp using a 0.7–1.0 mm circular punch device; and follicular unit transplantation (FUT, also called strip harvesting), in which a horizontal strip of scalp skin is surgically excised from the occipital scalp, the follicular units dissected under stereoscopic magnification, and the linear donor wound closed with tricophytic suturing (minimising scar visibility). Both techniques achieve equivalent hair density outcomes in skilled hands. Hair transplants are performed by dermasurgeons, plastic surgeons, and hair restoration specialists certified by the International Society of Hair Restoration Surgery (ISHRS). The procedure is definitive — transplanted follicles retain their DHT-resistance in the new location and produce permanent hair growth. Over 700,000 hair transplant procedures are performed globally each year.

Ideal hair transplant candidates are adults (men and women) with stable androgenetic alopecia — classified by the Norwood-Hamilton scale for men (grades III–VI) and the Ludwig scale for women (grades I–II). Stability means no significant further hair loss for at least 12 months; this criterion is especially important in young patients under 25, in whom ongoing loss can alter transplant planning requirements. Medical therapy (finasteride 1 mg daily and minoxidil 5% topical solution or foam) should be optimised and continued long-term to slow progression of non-transplanted native hair. Adequate donor density (more than 40 follicular units/cm² in the safe donor zone) is required; donor area is assessed clinically and by trichoscopy. Additional suitable candidates include those seeking eyebrow, beard, moustache, or eyelash restoration; scar camouflage (traumatic, surgical, or radiation scars); and correction of previous unsatisfactory hair transplant results. Contraindications include diffuse unpatterned alopecia (DHT-resistant donor zone is compromised), uncontrolled hypothyroidism or iron deficiency causing active hair loss, active scalp infection, alopecia areata in active phase, severe donor hair depletion from prior excessive extraction, bleeding disorders, and unrealistic expectations.

On the day of surgery, the recipient hairline is designed with the surgeon, who marks the planned hairline and graft distribution area based on facial aesthetics, predicted future loss, and available donor supply. The entire procedure is performed under local anaesthesia (ring block with lidocaine 2% with adrenaline, or tumescent anaesthesia of the donor and recipient areas). Oral diazepam or midazolam sedation may be offered. FUE technique: the donor area is shaved or trimmed to 1–2 mm. A 0.7–1.0 mm motorised or manual rotary punch extracts individual follicular units leaving tiny scattered circular scars, invisible to the naked eye when hair grows back. Grafts are stored in hypothermosol or Plasmalyte solution at 4°C. FUT technique: a 1–2 cm wide strip (15–25 cm long) is excised under tumescent anaesthesia and the wound closed with tricophytic suturing. The strip is dissected into individual follicular units under x10 magnification by technicians. Recipient sites are made with custom-designed Dull needles or blades (Choi implanters for FUE) angled and directed to match the existing hair direction. Grafts are meticulously placed into recipient sites. Typical sessions transplant 1,500–4,000 grafts over 6–10 hours. Operating theatres must maintain appropriate graft out-of-body time under 6 hours for optimal graft survival.

Hair transplant surgery provides the only permanent solution for androgenetic alopecia — no other treatment, including finasteride and minoxidil, produces irreversible restoration of lost hair follicles. Transplanted follicles are DHT-resistant and produce permanent hair growth in the recipient area. Graft survival rates are 90–95% with experienced surgeons and proper handling technique. Natural-looking results with individual follicular units matching the direction and angle of surrounding hair are achievable in skilled hands. Patient satisfaction rates are 80–95% at 12–18 months in published series from ISHRS accredited centres. FUE leaves no linear scar and allows very short haircuts; FUT allows maximum graft yield per session. Hair transplant is increasingly popular as a medical tourism procedure: in India, hair transplant costs INR 40,000–1,50,000 (USD 500–1,800) for 2,000–4,000 grafts, compared to USD 8,000–20,000 in the USA or GBP 6,000–15,000 in the UK, with many leading Indian centres (Hyderabad, Mumbai, Delhi) achieving international standards. Eyebrow and beard transplants achieve natural-looking results with similar graft survival rates.

Hair transplant surgery is generally safe when performed by experienced surgeons in appropriate facilities. Shock loss (effluvium) of surrounding native scalp hair is common (20–30% of patients), caused by surgical trauma and anaesthetic effect on adjacent follicles; shock loss is temporary and hair regrows within 3–4 months. Temporary shock loss of transplanted grafts at 2–4 weeks ('ugly duckling' phase) is a normal and expected part of the healing process — patients must be counselled that transplanted hairs shed before regrowth begins. Infection (folliculitis, abscess) occurs in under 1% of cases and requires antibiotics. FUT linear scar visibility is minimised by tricophytic closure but may be cosmetically unacceptable if the patient wears very short hair; FUE leaves only dot scars. Graft failure from inadequate technique (poor graft handling, excessive out-of-body time, incorrect angulation) results in suboptimal density and may necessitate a second session. Cyst formation (ingrown transplanted hairs) is common in the first few months and managed with warm compresses. Numbness of the donor or recipient area is common and usually resolves over 3–6 months. Unrealistic expectations are the leading cause of dissatisfaction — thorough pre-operative counselling with digital density and hairline design simulation is essential. Hiccups (from local anaesthetic) and headache are minor intraoperative effects.

Immediately post-surgery, the scalp is gently covered with a saline-moistened gauze and a loose protective cap. Forehead and periorbital swelling peaks at days 2–4 from fluid tracking down the forehead, and resolves spontaneously by day 5–7. Scabs form at recipient and donor sites within 24 hours and must not be picked; they separate naturally over 10–14 days with gentle saline soaks and a prescribed washing technique starting from day 3 post-surgery. Transplanted hairs shed at 2–4 weeks — this is normal and does not indicate graft failure. Patients should be clearly counselled to expect this before surgery to prevent unnecessary anxiety. New hair growth begins at the follicle level at 3–4 months; visible hair shaft growth appears from month 3–4 and density improves progressively through 12–18 months. The final result with full density and naturalness is assessed at 12–18 months. Strenuous exercise, swimming, and direct sun exposure are restricted for 2–4 weeks. Protective headwear outdoors is advised for 4–6 weeks. Minoxidil and finasteride are continued long-term to protect existing non-transplanted native hair from ongoing DHT-mediated loss. Follow-up at 3, 6, and 12 months monitors progress with trichoscopic and clinical photography.