1) What is hair transplantation and who are candidates for it?

Hair transplantation is an outpatient surgical procedure in which hair follicles are removed from areas resistant to hair loss (usually the back and sides of the head, known as hair banks ) and transplanted into thinning or balding areas. The fundamental principle of this procedure is Donor Dominance ; that is, the transplanted follicles retain their viability in the new area.

This method is the only way to permanently restore hair in lost areas and, unlike medications, does not require lifelong use; however, its success depends on several key factors: correct diagnosis of the cause of hair loss, the quality of the hair bank, the skill of the surgeon, and compliance with postoperative care .

2) Hair anatomy and its growth cycle

It is impossible to understand the principles of hair transplantation without understanding the structure of hair. Each hair strand is nourished by a follicle (root) deep in the scalp. The basic units of transplantation are grafts ; each graft usually consists of 1 to 4 hair strands along with the surrounding tissue.

Hair growth cycle in three phases

• Anagen (growth) phase: lasts about 2 to 6 years and about 85 to 90% of hair on the head is in this phase.
• Catagen (transitional) phase: About 2 to 3 weeks; the hair root shrinks and its nutrition stops.
• Telogen phase (resting and shedding): About 3 months; old hair falls out and the follicle starts the cycle over.

The important thing about hair transplantation is that the transplantation merely relocates the follicles; the natural growth cycle is maintained , and therefore temporary hair loss in the first months after transplantation is part of the natural process.

3) Common causes of hair loss

Before making any decision to implant, the cause of hair loss must be precisely determined, because implanting hair in active hair loss without treating the cause does not have a lasting result.

• Androgenetic alopecia (inherited): The most common cause in both men and women. Sensitivity of follicles to the hormone DHT causes the follicles to gradually shrink (miniaturize). In men, it manifests as a receding hairline and thinning of the scalp, and in women, it manifests as diffuse thinning on the top of the head.
• Telogen effluvium: caused by severe stress, illness, high fever, childbirth, or nutritional deficiencies; usually reversible.
• Alopecia areata: An autoimmune disease that is not a candidate for transplantation on its own.
• Injuries and scars: Burns, surgery, or accidents; one of the best uses for hair transplantation is in scarred areas, provided there is adequate blood supply to the area.
• Other causes: thyroid disorders, ovarian failure, taking certain medications, and harmful hair styling (constant pulling).

4) Pre-implantation consultation and evaluation

The success of a hair transplant largely depends on the quality of the consultation phase. In a standard evaluation, the following are examined:

• Review of medical and family history: underlying diseases, medications used, and pattern of hair loss in relatives.
• Blood tests: including coagulation tests, blood sugar, thyroid, iron and ferritin, and hormones if needed.
• Determining the degree of baldness: Usually based on the Norwood scale for men and the Ludwig scale for women.
• Hair bank evaluation: density, hair shaft diameter, and number of harvestable grafts.
• Hairline design: The most important aesthetic element; it should be designed to suit the shape of the skull, age, and expectations. The natural hairline is usually slightly irregular and non-linear.
• Calculating the number of grafts required: Based on the size of the bald area and desired density; for example, 2,500 to 4,000 grafts may be required for average scalp coverage.

5) Hair transplant techniques

FUT (Tape Technique)

In this method, a thin strip of scalp skin is removed from the donor area and then divided under a microscope into single-strand and multi-strand grafts. The removal site is closed with sutures, leaving a thin linear scar that is usually hidden under the hair. Its main advantage is that a large number of grafts can be removed in one session, but it has a longer recovery period and is more likely to be painful.

FUE (Follicular Extraction)

The most popular method today; grafts are extracted individually with micro punches (0.7 to 0.9 mm) directly from the hair bank. In the donor area, only small, pale dots remain instead of linear scars, and recovery is faster. For short hair, this method is a better choice.

Sapphire FUE

Complementing the FUE method by using sapphire blades instead of metal blades to create the implant channels. Finer and smoother incisions reduce tissue trauma, reduce swelling and the risk of keratinization, and allow for higher implant density.

DHI (Direct Hair Transplantation)

In this method, the implantation is performed with special Choi pens ; that is, the channel creation and graft placement steps are performed simultaneously and without a gap. Advantages include precise control of the angle and depth of the hairs, high density, and no need for complete head shaving (in appropriate cases); but the procedure time is longer and requires an experienced team.

6) Comparison of techniques; which one is more suitable for you?

Note: No technique is absolutely “best.” The choice of method should be based on the extent of baldness, quality of the hair bank, hair type, budget, and surgeon’s opinion , not just on advertising.

7) Step-by-step hair transplant procedures

1. Initial preparation: Discontinue blood thinners and supplements such as vitamin E, omega-3, and ginkgo at least a week in advance (only with your doctor's approval), avoid smoking and alcohol, and get enough sleep the night before surgery.
2. The day of surgery: Eat a light breakfast, wear button-downs, and bring a companion. The surgery usually takes between 4 and 8 hours.
3. Local anesthesia: The donor and recipient areas are numbed with local anesthesia (usually lidocaine); the patient is awake during the procedure and does not feel any serious pain.
4. Graft harvesting: Depending on the chosen technique, grafts are extracted in strips or individually and placed in a preservative solution to maintain their blood supply.
5. Sorting and counting grafts: Grafts are sorted based on the number of threads (single for the growth line, multi-thread for density).
6. Creating the channels: The angle, depth, and direction of the channels are designed according to the natural direction of hair growth; this step determines the naturalness of the result.
7. Graft implantation: Grafts are delicately and painlessly placed in the canals; the forehead and brow area are filled with single-strand grafts for a more natural appearance.
8. Dressing and final explanation: Bandaging the donor area and providing care and medication instructions.

8) Post-hair transplant care

The first ten days (the most critical period)

• Sleep: Keep your head elevated (2 pillows or 45 degrees) and avoid sleeping on the implant area.
• Washing: The first washing is usually done by the clinic after 48 hours; then, according to the instructions, with baby shampoo and very gentle movements.
• Medications: Regular use of antibiotics, anti-inflammatories, and if prescribed, prednisolone to reduce swelling; booster sprays or solutions as prescribed.
• Avoidances: Touching, scratching, and manipulating scabs; scabs should never be picked off, but should be removed by natural washing.
• Forehead swelling: This is normal and peaks on the second and third days; it is reduced by applying mild cold to the forehead (not the implant area) and keeping the head elevated.
• Exercise: Avoid heavy activity, gym, swimming, and head-lowering movements for 10 to 14 days.
• Smoking and alcohol consumption: prohibited for at least two weeks, as it disrupts the blood supply to the newly transplanted follicles.
• Sun, pool, and sauna: Avoid direct sunlight, salt water, chlorine, and extreme humidity for one month.

From the third week onwards

• From the second or third week, you can gently touch the hair, and after two weeks, superficial shaving with scissors (not a razor) is allowed.
• The donor area will improve with moisturizer and gentle massage from the second month to reduce tightness and improve appearance.
• Gentle exercise (walking) is permitted from the second week and heavy training from the end of the first month.

9) Hair growth process after transplantation and final result

One of the important principles of hair transplantation is to have realistic time expectations . The growth process is carried out in stages:

• Week 1 to 3: The scabs fall off and temporary hair loss (Shock Loss) occurs; the transplanted hair falls out but the roots remain healthy. This stage is completely normal.
• Months 2 to 3: The area may look paler than before; this "growth valley" is temporary and is not a cause for concern.
• Month 3 to 4: The first new, fine hairs begin to grow.
• Month 6 to 8: About 50 to 60% of results are visible; hair becomes thicker and denser.
• Months 9 to 12: The result is almost complete in the forehead and hairline area.
• Months 12 to 18: Full growth of the scalp area (this area matures later than other areas) and the final result is achieved.

10) Possible complications and ways to prevent them

Hair transplantation is a safe surgery with usually mild and transient complications, but like any other procedure, it has risks:

• Swelling of the forehead and around the eyes: Common and normal; controlled by sleeping with the head elevated and prescribed medication.
• Scabs and itching: Eliminated by regular washing; scratching is prohibited.
• Temporary numbness of the Denver area: May last for several weeks to several months.
• Fibrosis or hardening of the donor area: In repeated FUEs and high harvest density; can be prevented by choosing an experienced clinic.
• Infection: Rare; prevented by maintaining hygiene and taking antibiotics.
• Tiny cysts (folliculitis): Sometimes seen in the first month and usually resolve spontaneously.
• Unnatural result (doll-like growth line): It depends entirely on the surgeon's skill; the best prevention is to choose a reputable clinic and see real samples.

11) Common mistakes and golden tips

❌ Mistakes that ruin the result

• Implantation at a young age and before the loss is stabilized.
• Choosing a clinic solely based on low price and attractive discounts.
• Demand for "over-density" implants in one session that disrupts blood supply to the area.
• Arbitrary discontinuation of medications or washing in the first few days.
• Resuming smoking and heavy exercise before the due date.
• Just looking at "before and after" pictures without any in-person inquiries or visits.

⭐ Golden Tips

• Design the growth line conservatively ; a line that is too low will look unnatural in the future.
• Give priority to sensitive aesthetic areas (hairline and parting of the head).
• Supplements such as biotin, zinc, and iron (if deficient) help with hair quality but are not a substitute for mainstream medications.
• Be patient; it is not fair to judge the result before 12 months.
• If a second session is needed, leave at least 8 to 12 months between sessions.

12) Summary and FAQs