After a hair transplant: regrowth, aftercare and the second session

Following a hair transplant, questions arise one after another: will the transplanted hair fall out? When will it be possible to wash it normally? At eight months, is the result final? And should a second session be planned to achieve greater density?

Regrowth takes place over several months. An improvement at eight months does not necessarily mean that the result has fully matured. As for aftercare, the schedule provided by the surgical team takes precedence over any programme found on the internet: washing recommendations vary according to protocols and the patient’s individual situation. [1–3]

Eight months: results are already visible, but not always final

The American Academy of Dermatology states that results usually become visible between six and nine months, and sometimes at twelve months. The NHS places the timeframe for seeing the full result within a wider range, from ten to eighteen months. These guidelines reflect variability: they do not allow for a promise of a definitive hairline by a specific date. [1,2]

At eight months, a photograph may show a significant change, whilst the density, length and appearance of the hair are still evolving. Any comparison should be based on photographs taken under lighting conditions, from an angle and with a hair length that are as similar as possible. A different hairstyle or lighting alone does not prove an increase or decrease in density.

The follow-up appointment serves to examine the entire scalp, the donor area and the regrowth, and then to decide whether to wait a little longer before drawing any conclusions.

How does the hair change after the transplant?

A distinction must be made between skin healing, the shedding of visible hair shafts and the growth of hair from the transplanted follicles. These are not the same processes.

- The first few days: the scalp may feel tender, be swollen and develop small scabs. These changes should be monitored in accordance with the team’s instructions. [2] - Between two and eight weeks: it is common for the transplanted hair to fall out. The loss of the visible hair shaft does not automatically mean that the graft has been lost. [1] - Around the third month: the hair may temporarily appear less dense than before the procedure. This phase can be disconcerting but does not, in itself, constitute evidence of failure. [1] - Around the fourth month: new hair generally begins to appear, according to NHS guidelines. Regrowth is not necessarily uniform across the entire area. [2] - Six to nine months: the change usually becomes more noticeable. It is still useful to compare this with the initial photographs and the treatment plan. [1] - Ten to eighteen months: a more comprehensive assessment becomes possible, depending on individual progress. A lack of progress, an abnormal area or any cause for concern warrants a check-up, without waiting for an arbitrary deadline. [2]

Grafts, follicles and hairs: what are we actually counting?

The follicle is the structure that produces a hair. A follicular unit is a small, natural group of follicles. A graft may contain one follicular unit and therefore several hairs: the number of grafts does not necessarily correspond to the number of hairs implanted. [5,7]

A quote stating ‘3,000 hairs’ does not mean the same thing as a quote stating ‘3,000 grafts’. Ask which unit is being used, how many grafts are planned, and how they will be distributed between the hairline, the central region and the other areas to be treated.

The post-operative report should make it clear how many grafts were actually harvested and implanted. This figure provides information about the procedure carried out; it is not sufficient to predict the aesthetic outcome.

How many grafts are needed for a good result?

There is no universal number that guarantees a satisfactory result. The number required depends, in particular, on the area to be covered, the remaining hair, the thickness and shape of the hair, the contrast between the hair and the skin, and the availability of grafts in the donor area. Two people receiving the same number of grafts may achieve a different perceived density. [5,6]

Planning involves matching the recipient area and the desired density against the available donor supply. The ISHRS’s technical guidelines emphasise this balance: the number of grafts required must remain within the limits of what can be safely harvested from the donor area. [7]

To understand a quote, let us take a purely arithmetic example: an area of 50 cm² multiplied by an assumed 30 grafts/cm² equals 1,500 grafts. This calculation is neither a recommended density nor a prescription for this area. On its own, it does not take into account existing hair, the desired distribution or the donor reserve.

The right questions to ask are therefore: ‘What area are you measuring? What density are you proposing for each area? How much donor reserve will remain available?’ A proposal involving several thousand grafts warrants a personalised explanation, rather than a comparison limited to the highest figure.

Do two sessions necessarily produce a more natural result?

No. Several procedures may be necessary to achieve the agreed-upon goal, but a second session is no guarantee of beauty or a natural look. One session may aim to provide initial coverage, whilst another may target an untreated area or add further density. A further procedure may also be discussed if hair loss continues in areas not covered by the transplant. [1,8]

A natural appearance also depends on the shape of the hairline, the direction of the hair and its distribution. Increasing the number of grafts without a long-term plan does not replace these considerations. The donor supply is not unlimited: it must be considered over the entire course of treatment, and not just for the current procedure. [5,6]

A proposal for two sessions must specify the objective of each, the reason for this split, the estimated cost and the circumstances that might lead to a change in the plan. A distinction must also be made between a procedure organised over two consecutive days and a second operation decided upon after the results of the first have been assessed.

How long should one wait between two hair transplants?

For a second session intended to complete an area that has already been transplanted, it is important to allow sufficient time to observe the initial regrowth. A technical review published in the Journal of the American Academy of Dermatology recommends waiting nine to twelve months when a second session is necessary. This timeframe is a clinical guideline, not an automatic authorisation for further surgery. [4]

The assessment period may be extended if the results continue to evolve, if there are concerns about healing, or if the objective of the new procedure remains unclear. The timetable must take into account the area to be treated, the initial procedure and the donor reserve.

At eight months, it is reasonable to request a review; however, it is premature to conclude that a second session is essential based solely on the appearance of the hair without a proper examination. Ask the surgeon what further results they expect from the first transplant and what concrete benefits a second one would bring.

Post-transplant care: a day-by-day guide

This schedule sets out the points to check with the team. It does not replace your discharge summary. The recipient area, where the grafts are implanted, and the donor area, where they are harvested, may require different aftercare. A FUT procedure involving sutures also requires monitoring of those sutures. [2,3]

Day of the procedure — D0

Before leaving the clinic, ask for written instructions: prescribed medication, care for both areas, the first wash, any dressings, sleeping position and your next check-up. Make sure you have a number to call in case of any problems. Do not change your usual treatment on your own, particularly if it affects blood clotting.

First day — Day 1

Protect the grafted area from rubbing, scratching and impact. Follow the instructions regarding rest and sleep. If a spray or topical treatment has been prescribed, use it as directed; do not add any product advertised as essential on social media.

This is also the time to confirm the date of the first wash if it is not clearly stated. Not all sources give the same date: some recommend washing early on, whilst the NHS advises a gentle hand wash on the sixth day. Do not combine different protocols. [2,3]

Day 2 — D2

Follow the dressing and washing schedule you have been given. If the first wash is to take place at the clinic, ask for a demonstration of how to carry it out at home afterwards. Do not try to test how securely the grafts are attached by touching them or pulling on your hair.

Note any changes in pain and swelling. Any marked worsening or unexpected symptoms must be reported, even if an appointment has already been booked. [2]

Day 3 — D3

Continue only with the authorised care. If you have started washing your hair, a gentle touch is more important than the urge to make your scalp ‘clean’ straight away. Avoid rubbing and ask specifically how to apply and rinse out the recommended product. [3,9]

Day four — D4

Make sure you clearly distinguish between the instructions for the donor site and those for the recipient site. Do not pick at scabs with your fingernails. Ask the team for advice if a dressing is stuck, if you are unsure how to remove it, or if an area looks different from the others.

Day 5 — D5

Continue with the treatment plan; do not rush through the steps just because the pain is subsiding. Before wearing a hat or resuming any activity that rubs against the scalp, seek specific guidance. Returning to work depends on the type of work and your recovery: an office job and a job involving a helmet or physical exertion do not present the same challenges.

Day 6 — D6

The NHS states that gentle hand washing is usually possible at this stage. This does not mean you must wait until Day 6 in all cases, nor that you should resume vigorous washing on that day. Your team may have started washing earlier and planned a different progression. [2]

Day 7

Make the most of your scheduled check-up, or contact the team if you’re still finding any instructions difficult to follow. Do not decide to remove all scabs on a fixed date. Their appearance, the healing process and the protocol used determine which actions are permitted.

Days 8 to 10

Comfort may improve without all precautions being lifted. Continue with the prescribed washing schedule. Check with the team before resuming sport, activities involving heavy sweating, or wearing headgear that compresses the head. Do not substitute a medical check-up for advice based on a single photograph.

Days 11 to 14

The team may adapt your aftercare to suit the healing process. Following a procedure using non-absorbable sutures, these are often scheduled for removal around days 10 to 14; this procedure is carried out in accordance with the practitioner’s instructions, and not by the patient. [2]

The timeline for resuming swimming, sauna use, strenuous exercise, the use of styling products and sun exposure must be confirmed with the surgeon. The absence of discomfort is not sufficient grounds for granting all these permissions.

How should you wash your hair without damaging the grafted area?

The first wash should be accompanied by an explanation of the correct procedure: product to use, amount, duration of contact, and how to rinse and dry. Ask explicitly whether your fingers may touch the recipient area and when normal movements will be permitted.

Recovery guidelines generally recommend gentle washing and a gradual return to normal routines. The ASPS particularly emphasises the importance of not rubbing the scalp vigorously at the start. [3,9]

Do not use an exfoliating shampoo, an antiseptic or a ‘stimulating’ lotion on your own initiative to make the scabs fall off more quickly. A product used in a study or in a clinic is not automatically suitable for your scalp. If the protocol you have been given is unclear, ask for a demonstration rather than improvising.

What signs should prompt you to contact the team straight away?

Severe or increasing pain, persistent bleeding, a fever, unusual discharge or any worrying changes to the skin require immediate medical advice. Do not dismiss these signs as simply a normal part of the regrowth process. The NHS recommends contacting the clinic in the event of severe pain or any unexpected symptoms. [2]

In the event of severe discomfort, breathing difficulties or a severe allergic reaction, seek urgent medical assistance. If you have returned from a trip abroad, arrange in advance for someone to examine you locally: sharing photographs is not always a substitute for a face-to-face examination.

Preserving existing hair and preparing for follow-up

A hair transplant redistributes hair; it does not necessarily prevent further hair loss in areas not treated. A dermatologist can discuss a treatment tailored to your diagnosis. You should not automatically start, stop or resume taking an anti-hair loss medication based on a general article. [1]

Keep a record of your consultation notes, the number of grafts implanted, the areas treated, any prescriptions and reference photographs. Before booking a second session, ask for clarification on whether any changes are due to the healing process still being underway, further loss of existing hair, initially limited coverage, or a result that needs correcting.

The aim is to draw up a clear and realistic plan: protect the healing process initially, allow time for regrowth, then reassess the need for a further procedure based on an examination and the donor reserve.

This content provides general information and is not a substitute for personalised advice from your surgeon or a medical consultation.

Medical sources

[1] American Academy of Dermatology. A hair transplant can give you permanent, natural-looking results. Patient information page accessed on 11 November 2026. https://www.aad.org/public/diseases/hair-loss/treatment/transplant

[2] NHS. Hair transplant. Patient information page, last revised: 29 September 2023; accessed 11 November 2026. Timeframes are general guidelines. https://www.nhs.uk/tests-and-treatments/cosmetic-procedures/cosmetic-surgery/hair-transplant/

[3] Cleveland Clinic. Hair Transplant. Patient information on recovery, accessed 11 November 2026. https://my.clevelandclinic.org/health/treatments/21519-hair-transplant

[4] Jimenez F, Vogel JE, Avram M. CME article Part II. Hair transplantation: Surgical technique. Journal of the American Academy of Dermatology. 2021;85:818–829. Section: Postoperative care and follow-up. Full text accessed. https://mediteknia.es/wp-content/uploads/2023/07/HT-Part-II-published-1.pdf

[5] International Society of Hair Restoration Surgery. The donor site: savings & loan of hair for transplantation. Professional patient information page accessed on 11 November 2026. https://ishrs.org/the-donor-site-savings-loan-of-hair-for-transplantation/

[6] International Society of Hair Restoration Surgery. Hair characteristics: a major consideration in hair transplantation. Page accessed on 11 November 2026. https://ishrs.org/hair-characteristics-a-major-consideration-in-hair-transplantation/

[7] International Society of Hair Restoration Surgery. FUE Clinical Practice Guidelines. 15 July 2019. Planning the recipient area and preserving the donor area. https://ishrs.org/wp-content/uploads/2019/08/July-15-2019-FUE-Guidelines.pdf

[8] MedlinePlus. Hair transplant. Medical encyclopaedia, accessed 11 November 2026. https://medlineplus.gov/ency/article/007205.htm

[9] American Society of Plastic Surgeons. Hair Transplant Recovery. Patient information page accessed 11 November 2026. https://www.plasticsurgery.org/cosmetic-procedures/hair-transplantation-and-restoration/recovery