Hair restoration is one of the most planning-dependent procedures in plastic surgery — a single wrong call on the hairline or the donor strip can show up for the rest of the patient's life. In this episode of Plastics in Practice we walk through what residents actually need to know about modern hair transplantation: how to evaluate the donor area, how to think about lifetime donor yield, the trade-offs between strip excision and FUE, graft preparation and the out-of-body clock, recipient site design (hairline placement, angle and direction, ethnic and gender variations), postoperative management, and where finasteride, minoxidil, and PRP fit in. Key takeaways: The Safe Donor Area (SDA) defines what is truly permanent — and a 30-year-old destined for Norwood V/VI averages roughly 5,393–6,404 lifetime FUs from average-density donor scalp.¹ Strip excision still dominates (~88.5% of cases) vs. FUE (~11.5%); transection rates can be pushed below 10–15% with tumescent solutions and skin-hook technique.² Graft survival drops about 1% per hour out of body — chilled saline gives ~88% survival at 8 hours; pear-shaped grafts under 6× magnification protect the bulb, sebaceous glands, and dermal papilla.³ Hairline placement: never too low. The mid-frontal point lives where the vertical forehead transitions to the horizontal scalp, ~7–10 cm above the glabella. Build in micro- and macro-irregularities so it never reads as a wall.⁴ Density target for natural long-term coverage in younger patients is 25–30 FU/cm²; high-density "dense packing" >30 FU/cm² is reserved for ideal donor/recipient profiles.⁴ Adjuncts matter: finasteride 1 mg is ~87% effective at slowing AGA progression; topical minoxidil reduces postoperative effluvium and is encouraged 5–12 weeks post-op.⁵,⁶ Cicatricial alopecia (post-facelift, burn, traction): keep recipient density conservative at 15–20 FU/cm² to avoid overwhelming a compromised blood supply.⁷ This content is for educational purposes only and is not medical advice. 🎧 Full episodes available now: Instagram: https://www.instagram.com/plasticsinpractice/ Spotify: https://open.spotify.com/show/4Ct8jOgYXP9QJin7QOuG3Z?si=JNcBxQmwT2mfz1LSJZEFKA Apple: https://podcasts.apple.com/us/podcast/plastics-in-practice-resident-review/id1835564216 YouTube: https://youtube.com/@plasticsinpractice?si=tqLInp5vvsJFKlRO Amazon: https://music.amazon.com/podcasts/8bef056e-7c87-4224-978e-7e691b04554a/ 📘 Free Study Guides: → https://drive.google.com/drive/u/0/folders/12BUldPbCmihG-ndZh6992WqhRYyxw8ZZ #PlasticSurgery #Residency #HairTransplantation #FUT #FUE #SurgicalEducation #PlasticsInPractice #HairRestoration #Aesthetic #SurgicalPearls References: 1. Unger W, Unger R, Wesley C. Estimating the number of lifetime follicular units: a survey and comments of experienced hair transplant surgeons. Dermatol Surg. 2012;1-6. 2. Pathomvanich D. Donor harvesting; a new approach to minimize transection of hair follicles. Dermatol Surg. 2000;26:345-348. 3. Limmer R. Micrograft survival. In: Stough D, Haber R, eds. Hair Replacement. St. Louis, MO: Mosby Press; 1996:147-149. 4. Shapiro R. Principles of creating a natural hairline. In: Unger W, Unger R, Unger M, Shapiro R, eds. Hair Transplantation. 5th ed. New York, NY: Marcel Dekker; 2011:374-382. 5. Rossi A. Finasteride, 1 mg daily administration on male androgenetic alopecia and different age groups: 10-year follow up. Dermatol Ther. 2011;24(4):455-461. 6. Bohannon P. Topical minoxidil used before and after hair transplantation. J Dermatol Surg Oncol. 1989;15:50-53. 7. Unger W, Unger R, Wesley C. The surgical treatment of cicatricial alopecia. Dermatol Ther. 2008;21(4):295-311.