Complications of Hair Transplant Procedures: Is it Safe?

Hair transplant stands as a highly effective and promising method in the field of hair restoration. As advancements continually refine the techniques, expectations rise. However, despite this optimism, individuals must understand the landscape of hair transplant side effects and address the question, is hair transplant safe? These effects significantly influence the overall experience and outcomes of the procedure.

People often explore medications, ointments, and various surgical treatments to regain full hair and boost confidence. Nevertheless, the path to hair rejuvenation presents challenges, as each method carries its own set of hair transplant risks and potential complications.

This discussion delves into the complexities of hair transplant side effects and hair transplant complications, providing a comprehensive understanding to enlighten individuals in making informed decisions about their hair restoration experience. 

Although hair transplant is low-risk, sometimes it may be associated with complications.

Is Hair Transplant a Safe Procedure?

Questions about the safety of hair transplant procedures are widespread among patients, particularly concerning the possibility of long-term side effects and the influence these effects could have on the patient's general health. The fact that this cosmetic intervention is widely considered safe is an important point to keep in mind, as the benefits of this procedure considerably outweigh any potential negatives.

Common Side Effects of Hair Transplant

Hair transplant procedures often come with common, unavoidable side effects. To gain a better understanding of these complications, please read the following section:

  • Pain
  • Bleeding
  • Hair shedding
  • Swelling
  • Scabbing and itching
  • Numbness
  • Scarring
  • Pimples or folliculitis
  • Redness

Complications of Hair Transplant Techniques


The hair transplant surgery is done under general or local anesthesia, depending on the type and extent of the procedure; therefore, you will not feel even the slightest pain during the procedure, but most patients feel mild to moderate soreness in their scalp for two weeks following the surgery which can be controlled by taking prescribed pain medications.


All hair transplantation methods involve cuts or nicks, so bleeding is an unavoidable complication of hair transplant surgery. Adept surgeons use advanced techniques and tools to minimize blood loss and control post-op bleeding using specific pads and bandages. It is important to know that taking blood thinners before and after hair transplantation surgery increases the risk of bleeding and can have irreversible effects. 

Hair Transplant Side Effects

Hair shedding

Despite expecting hair growth right after hair transplant surgery, almost all patients experience severe hair shedding between 1 to 6 weeks after the procedure. The main reason for hair shedding is that the follicles are temporarily cut off from their blood supply. Fortunately, the roots of the follicles start growing from the third month after the operation, and the hair gets thick again.

In the first few weeks following a hair transplant, it is common for patients to observe hair shedding.
Read more: Hair Loss After Hair Transplant - Normal Period & Ways to Prevent


Swelling after hair transplant is another common side effect of the surgery, which may extend from under the eyes to the back of the head. Sometimes, swelling is accompanied by bruising, especially on the forehead and parts of the scalp where the skin is thin. Although swelling is a sign of healing, many patients find it extremely bothersome. The good news is that most inflammation subsides within 10 days, and the residual swelling goes down almost two months after the surgery.

Scabbing and itching

Perhaps the most irritating complications of hair transplants are scabbing and itching. To remove the scabs and reduce the itching, you can frequently wash your head with prescribed shampoo and lukewarm water or use sprays provided by your doctor. Like swelling and bruising, the itching will be reduced almost two weeks after the operation and completely gone a month after the surgery.


The numbness of the scalp after a hair transplant can be attributed to nerve damage or anesthetics used during the procedure. If your surgeon is experienced enough not to damage the nerves and vessels in your skin, you will not experience prolonged numbness. 

The numbness of the scalp is a common side effects of hair transplant.


After hair transplantation surgery, there will be either a linear scar or small dot-shaped ones on the donor and recipient areas. Fortunately, the hair strands cover the scars as they grow.

Pimples or folliculitis

Emerging pimples and small bumps on the scalp are less common than other complications of hair transplant surgery, but some patients get them a week after the operation. The scalp pimples usually emerge due to inflammation in the hair follicles, accumulation of skin oil in the pores, ingrown hair follicles, infection, and skin allergic reactions to anesthetics and medications. It should be noted that popping up the blemishes can worsen them, so you should refrain from touching and scrubbing them until they fall off.


It's common for patients to experience some redness following a hair transplant, which is usually a brief side effect. It happens because the scalp was injured during the transplantation process. The recipient area, where the new hair follicles have been implanted, is typically where the redness is more noticeable. Increased blood flow to the area as part of the healing process is what's causing this redness.

It is crucial to remember that this redness will eventually go away, usually within a few days or weeks, even though it can be unsettling. Minimizing redness and accelerating healing can be achieved regarding the surgeon's post-operative care instructions.

Complications of Hair Transplant Techniques

This section discusses the dangers of natural hair transplants and the hair transplant complications associated with different hair transplant techniques. 

Complications of Hair Transplant Techniques

FUE side effects

  • Making deep holes may cause the formation of cysts;
  • Severe scarring;
  • Sharp pain in donor area;
  • Change in the sensation of the scalp;
  • Thinning of the donor area;
  • Necrosis.

FUT side effects

  • Formation of hypertrophic scars;
  • Bleeding;
  • Infection;
  • Improper or delayed wound healing;
  • Hair shedding in the donor area;
  • Necrosis;
  • Numbness;
  • Moderate pain.

DHI side effects

  • Infection;
  • Reaction to anesthesia;
  • Irregular heart rate due to anesthesia;
  • Undesirable results;
  • Severe hair loss if the skin rejects the new follicles;
  • Moderate pain;
  • Bleeding;
  • Dizziness and headache.

How to Prevent Hair Transplant Side Effects?

Some hair transplant side effects, like pain and numbness, are unpreventable and natural. Still, some complications, such as infection, itching, bleeding, and excessive crusting, can be prevented or, at least, minimized greatly by considering the following points.

  • Choose a skilled surgeon and a high-quality clinic with standardized protocols;
  • Massage your scalp for at least two weeks before the operation to prepare your skin for the procedure. This will reduce the hair transplant risks of scaring;
  • Wash your head with proper shampoo the day before the surgery to minimize the risk of infection;
  • Wash your head with proper shampoo the day before the surgery to minimize the risk of infection, as it is one of the major risks after hair transplant surgery;
  • Take prescribed medications such as antihistamines to control the itching;
  • With the permission of your doctor, use a cold compress on your forehead and around your eyes to help the swelling and bruising go down;
  • Maintain good hygiene to prevent pimples and cysts, and
  • Avoid any activity, medication, or unhealthy habit that elevates your blood pressure or thins your blood; otherwise, you will have severe bleeding during and after the procedure. 

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Contact us for a free initial consultation about preventing hair transplant side effects.


Short-term Vs. Long-term Side Effects of Hair Transplant

Short-term side effects of hair transplant surgery include numbness, pain, redness of the scalp’s skin, crust formation, pimples, swelling, and bruising. Luckily, these side effects go away one to two weeks after the surgery, either by using medications or on their own. The long-term side effects of hair restoration surgery are rare but possible.

Some problems like the wrong direction of hair strands, damage to nerves, scalp laxity, a severe infection that causes folliculitis, and visible scarring can linger a bit longer or cause discomfort for a long time. If you follow your surgeon’s post-op tips, most hair transplant side effects will be resolved quickly.

Side Effects




Typically temporary, it resolves within weeks

Rare cases may experience prolonged numbness


Mild to moderate soreness lasts a few weeks

Generally, pain subsides in the short term


Common, lasts around 10 days

Residual swelling may persist for up to two months


Brief, usually resolves within days

Some may experience prolonged redness


Intense initially, diminishes after 2 weeks

Usually subsides within a month


Temporary, resolves within a few days

Not typically a long-term concern

Hair Shedding

Common in the first 1 to 6 weeks

Usually, temporary regrowth starts after 3 months


Linear or dot-shaped scars covered by hair

Scars may be visible but are usually minimal

Pimples or Folliculitis

Possible but less common

Generally resolves within a few weeks

Changes in Hair Direction

Rare, may be corrected with a follow-up

Uncommon, but corrective measures may be needed

Damage to Nerves

Rare, with experienced surgeons

Prolonged damage is uncommon


Possible, but usually managed with antibiotics

Uncommon in the long term

Thinning of Donor Area

Temporary, donor area usually regains density

Rare, and not a typical long-term issue

Visible Scarring in Donor Area

Minimal, covered by hair growth

Scarring may be visible but is generally minimal

Sensation Changes in Scalp

Temporary, normal sensation usually returns

Permanent changes are rare

Short-term Vs. Long-term Side Effects of Hair Transplant

Does Hair Transplant Work?

Hair transplant surgery has a relatively high success rate compared to medications and ointments. If a qualified plastic surgeon or dermatologist does this operation, more than %80 of transplanted hair follicles will survive and regrow. However, it must be mentioned that this method will not be as effective on people with severe hormonal problems, widespread baldness (no donor area), and scalp burns or injuries. Also, it may not work as expected on patients who have lost a part or all of their hair due to chemotherapy or radiotherapy.

Hair Transplant Success Rates
Read more: Hair Transplant Success Rates: Does Hair Transplant Really Work?

Hair Transplant in Iran: Successful Procedure

Hair transplants in Iran have gained significant popularity in recent years. The country is known for its advanced medical facilities and skilled surgeons, making it a preferred destination for individuals seeking hair restoration procedures. Iranian clinics offer various techniques, including Follicular Unit Extraction (FUE) and Follicular Unit Transplantation (FUT), ensuring personalized treatment plans tailored to each patient's needs.

Moreover, the cost of hair transplants in Iran is relatively affordable compared to other countries, attracting domestic and international patients. With its excellent healthcare infrastructure and experienced professionals, Iran has become a leading destination for those looking to regain their hair and confidence.

Hair Transplant in Iran

FAQs About Hair Transplant Side Effects

1) Are hair transplant surgery side effects more common in men or women?

Generally speaking, women with hormonal problems, sensitive skin, and anemia are more prone to severe hair loss after hair transplant surgery than men.

2) What causes hair transplant complications?

Inappropriate pre- and post-operation care, poor hygiene, inadequate experience of the surgeon, and non-sterile condition of the operation room are the main causes of hair transplant complications. 

3) Is hair transplant high risk?

Despite being a safe procedure, there are some risks of hair transplant, such as infection, bleeding, and severe scarring.

4) Are there significant health risks associated with hair transplantation?

 Based on research findings and accumulated experience, it is unlikely that side effects of hair transplantation, such as exposure to serious diseases or the development of conditions like brain damage or cancer, would occur. Like other surgical procedures conducted under sterile clinical conditions, hair transplant operations entail minimal risks, approaching nearly zero.

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