In short. Preparing for a hair transplant takes roughly a week and comes down to four things: complete the tests your clinic has ordered, stop any medications and supplements that thin the blood, give up nicotine and alcohol, and leave your scalp alone when it comes to aggressive products. You do not need to cut your hair yourself before surgery. The more precisely you follow these points, the less bleeding there is and the more predictable graft survival becomes.
Patients usually prepare for surgery over a long period and study the techniques in detail, yet the final seven days tend to pass chaotically. That stretch of time influences the two things your surgeon cannot control on your behalf: how well your blood clots and the condition of your scalp on the day of the procedure. Both factors directly affect how many grafts survive the transplant.
Below is a practical week-long plan: what to do each day, what to give up and which points you should not improvise. It draws on ISHRS clinical recommendations and reviews of complications in hair transplantation rather than on everyday advice from forums.
Why the final week matters more than the months before it
A hair transplant is outpatient surgery on an area with a rich blood supply. The scalp receives blood from several large arteries, so any factor that reduces clotting noticeably increases bleeding during graft harvesting and implantation.
The practical consequence is straightforward. When the surgical field bleeds more heavily, it is harder for the surgeon to see the direction in which the follicles grow and harder for the assistants to place grafts neatly into the prepared incisions. The time each graft spends outside the body increases. It is the length of that period and the trauma to the graft, rather than the method itself, that most often determine the survival rate.
A review of complications in hair restoration surgery states it plainly: most problems are entirely predictable and depend on factors controlled by the surgeon and the patient (Complications in hair-restoration surgery, PubMed). Preparation is the part that depends on you.
The second factor is the condition of the skin. Inflammation, flaking, fresh scratches or a flare-up of seborrheic dermatitis force the surgery to be postponed. A week is the minimum period in which most of these conditions can either be treated or honestly acknowledged so the date can be moved.
Tests and the final consultation: what should be ready
The standard pre-operative minimum at hair transplant clinics includes a complete blood count, a coagulation panel, glucose and tests for blood-borne infections. The exact list and how recent the results must be are set by the clinic, so do not rely on somebody else’s list found online.
One point that is often missed: the results should be ready not on the day of surgery but at least 2 to 3 days beforehand. If the coagulation panel shows an abnormality, your doctor needs time to adjust the plan or reschedule the procedure without rushing.
Tell your doctor separately about any chronic diagnoses: hypertension, diabetes, liver disease, clotting disorders, allergies to anaesthetics. These conditions are not an automatic bar to surgery, but they change the anaesthesia and monitoring protocol. We covered how anaesthesia works during this operation in detail in our article on whether a hair transplant hurts.
If you have not yet had a full diagnostic work-up of the causes of your hair loss, the week before surgery is too late. Assessment of the type of alopecia and its stage on the Norwood-Hamilton scale belongs to the trichologist consultation stage, not to the eve of the procedure.
Medications and supplements: what to stop and how many days in advance
This is the most important part of preparation. Many things patients do not think of as medication affect blood clotting.
Established guidance in dermatologic surgery calls for pausing agents that influence haemostasis several days before the procedure, but always with an assessment of cardiovascular risk (Bleeding Considerations in Dermatologic Surgery, PubMed). In other words, this is an individual decision rather than a universal rule.
What clinics usually ask you to stop 7 to 10 days in advance
- Aspirin and NSAIDs: ibuprofen, diclofenac, naproxen. They suppress platelet aggregation. Paracetamol is usually permitted for pain relief during this period.
- High-dose vitamin E: it is often included in multivitamins and hair products.
- Fish oil and omega-3: a dose above 1 g per day noticeably prolongs bleeding time.
- Herbal supplements: ginkgo biloba, garlic capsules, ginseng, curcumin, concentrated ginger.
- Alcohol-based tinctures and blood-thinning teas: their composition is often unpredictable.
A special case: minoxidil
Topical minoxidil increases blood flow in the scalp and can make bleeding worse. Most clinics ask patients to stop it 5 to 7 days before surgery. It is resumed once healing is complete, and at that point it works as supportive therapy during the recovery period (The potential role of minoxidil in the hair transplantation setting, PubMed). There is more on the drug itself in our article minoxidil: truth and myths.
Finasteride, unlike minoxidil, is usually not discontinued: it has no effect on blood clotting. Even so, the decision should be confirmed with your doctor.
Nicotine, alcohol and caffeine: the real timeframes
Nicotine constricts blood vessels and impairs oxygen delivery to the tissues. For transplanted follicles, which are nourished by diffusion during the first days, this is critical. Ideally you should stop smoking at least 2 weeks before surgery; the minimum acceptable period at most clinics is 7 days.
An important note: this applies to more than cigarettes. Vapes, heated tobacco devices, nicotine pouches and shisha produce the same vasoconstrictive effect. Nicotine patches used as a substitute are not neutral either, so discuss them separately.
Alcohol increases bleeding and causes dehydration. The standard requirement is complete abstinence for 3 to 5 days before the procedure. On the evening before surgery alcohol is strictly forbidden, beer and wine included.
Caffeine is often underestimated. It raises blood pressure and increases tremor, which is inconvenient during a procedure lasting several hours. In the 24 hours before surgery it is best to remove coffee and energy drinks entirely, and 3 days beforehand to cut back to one cup a day.
Scalp care during the final week
The goal is simple: arrive for surgery with clean, calm, undamaged skin free of inflammation.
What to do
- Gentle daily washing: an ordinary neutral shampoo, warm water, no fingernails and no vigorous rubbing.
- Light scalp massage: 5 to 10 minutes a day with your fingertips, which improves skin elasticity in the donor area.
- Enough water: around 30 ml per kilogram of body weight, if your doctor has not set any restrictions.
- Seven to eight hours of sleep: a poor night’s sleep beforehand raises blood pressure and sensitivity to pain.
What to avoid
- Scrubs and acid peels: micro-injuries to the skin make the field unusable.
- Styling products: remove hairsprays, waxes and dry shampoos completely 3 days in advance.
- Tanning beds and intensive sunbathing: burnt skin is a reason to postpone surgery.
- New cosmetic products: the week before surgery is no time to test your reaction to something unfamiliar.
If you have dandruff, itching or redness, tell the clinic straight away rather than on the day of surgery. Seborrheic dermatitis in a flare-up is treated before the procedure, which usually means a few days on a medicated shampoo.
Haircuts, colouring and hair length
The main rule: you do not need to shave or cut your hair yourself before surgery. The clinic prepares the donor area on the day of the procedure, trimming it to the length required for the chosen method.
This is not about perfectionism. Hair cut too short makes it difficult to assess the direction of follicle growth, and an uneven home haircut can conceal areas of lower density that the surgeon had planned to use.
Colouring, by contrast, is best done in advance: at least 7 to 10 days beforehand. Dye contains ammonia and oxidising agents that irritate the skin, and after surgery you cannot colour your hair for several weeks. If you colour regularly, it is calmer to refresh the shade a week before your date.
The same applies to any salon treatment: keratin straightening, hair botox, lamination. All of these should be done 10 days in advance or after healing is complete.
| When | What to do | Why |
|---|---|---|
| 7 days before | Complete your tests, stop NSAIDs, vitamin E, omega-3 and herbal supplements, discontinue minoxidil | To normalise blood clotting by the date of surgery |
| 7 days before | Quit smoking, including vapes and heated tobacco devices | To restore normal blood flow in the scalp |
| 5 to 7 days before | Colour your hair if you need to | Colouring is off limits for several weeks after surgery |
| 3 to 5 days before | Cut out alcohol completely, reduce coffee | To lower bleeding and blood pressure swings |
| 3 days before | Give up styling products, scrubs and tanning beds | To keep the skin undamaged |
| The day before | Wash your hair with a neutral shampoo, go to bed early, lay out your clothes | To arrive for surgery with clean skin and without stress |
| On the day of surgery | A light breakfast, a button-up shirt, someone to accompany you home | To avoid hypoglycaemia and protect the transplanted area |
The day before: the final 24 hours
On the evening before surgery, wash your hair with an ordinary neutral shampoo, without conditioner or any leave-in products afterwards. Your hair should be clean and dry, with no styling products in it.
Do not shave the donor area, do not use masks and do not apply oils. Do not take painkillers as a precaution: if you have a headache, check with the clinic whether paracetamol is allowed.
Get your clothes ready: a shirt or top that buttons or zips up. Anything you have to pull over your head creates a risk of catching the fresh grafts after surgery. Bring a light snack, water and headphones, since the procedure takes a long time.
Go to bed no later than 8 hours before you need to leave. A poor night’s sleep beforehand is one of the most common reasons for raised blood pressure in the morning, which delays the start of surgery.
Plan your logistics in advance. After the procedure you will not be able to drive and are unlikely to want to take public transport. Arrange for someone to accompany you or book a taxi.
The day of surgery: clothing, food, company
Have breakfast, but keep it moderate. A light breakfast with protein and complex carbohydrates keeps your glucose level stable through the several hours of the procedure. There is no need to arrive on an empty stomach: local anaesthesia does not require fasting, and hypoglycaemia is hard to tolerate.
Do not drink coffee or energy drinks in the morning. If you consume a large amount of caffeine daily, tell your doctor so that withdrawal symptoms are not mistaken for a reaction to the anaesthetic.
Arrive with time to spare. Before starting, your surgeon will draw the hairline again and agree it with you. This is not a formality, and rushing does the most harm here. The questions worth asking before the procedure are collected in the ISHRS guidance for patients (Questions to Ask Your Hair Restoration Surgeon).
Do not bring jewellery, contact lenses or unnecessary belongings. Glasses are preferable to contact lenses: the eyes dry out during a long procedure.
One last thing: preparation does not end on the day of surgery. Read ahead about what you can and cannot do after a transplant, along with the full rehabilitation instructions. That way you will not be searching for answers on your phone during the first night after the procedure.
Frequently asked questions
How many days before a hair transplant should preparation begin?+
Seven days is enough for most of the checklist, but nicotine is best given up two weeks in advance. Tests should be scheduled so that the results are in your hands at least 2 to 3 days before surgery. If you take anticoagulants or have chronic conditions, the preparation plan is agreed earlier, sometimes a month ahead.
Do I need to shave my head before surgery?+
No. The clinic prepares the donor area on the day of the procedure, trimming it to the length required for the chosen method. Cutting your hair yourself makes it harder for the surgeon to assess the direction of follicle growth and the density of the donor area, which can complicate planning.
Which medications need to be stopped before a hair transplant?+
Aspirin and non-steroidal anti-inflammatory drugs, high doses of vitamin E, omega-3, ginkgo biloba and other herbal supplements are usually stopped 7 to 10 days in advance. Minoxidil is discontinued 5 to 7 days before. Anticoagulants prescribed by a doctor are never stopped on your own: that decision belongs to the person who prescribed them.
Can I eat before a hair transplant?+
Yes, and you should. The operation is performed under local anaesthesia, so fasting is not required. A light breakfast with protein and complex carbohydrates helps you avoid hypoglycaemia during the several hours of the procedure. It is best not to drink coffee or energy drinks in the morning.
How long should I avoid smoking before a hair transplant?+
Ideally you should stop two weeks in advance; the minimum acceptable period at most clinics is seven days. Nicotine constricts blood vessels and impairs oxygen delivery to the tissues, and transplanted follicles are nourished by diffusion during the first days. Vapes, heated tobacco devices and shisha have the same effect.
Can I colour my hair before a transplant?+
Yes, provided you do it at least 7 to 10 days beforehand. Dye irritates the scalp, and after surgery you cannot colour your hair for several weeks. Salon treatments such as keratin straightening or lamination should also be planned in advance.
What should I bring on the day of surgery?+
A shirt or top that buttons or zips up, a light snack, water, headphones and glasses instead of contact lenses. Jewellery and unnecessary belongings are better left at home. Arrange in advance for someone to accompany you or book a taxi: you cannot drive after the procedure.