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Do PRP Injections Really Work For Hair Loss?

UPGUYS > Blog > Hair > Do PRP Injections Really Work for Hair Loss?
The person who wrote this article

Written by the UPGUYS Editorial Team
Published on November 24, 2023

Platelet-rich plasma (PRP) therapy, a treatment once confined to the realms of sports medicine and wound healing, has steadily garnered attention in the field of hair restoration. Utilizing a concentration of platelets from the patient’s own blood, PRP is believed to stimulate hair growth, offering a glimmer of hope to those battling various types of hair loss.

This article aims to objectively scrutinize the efficacy of PRP injections for hair loss, delving into the depth of existing research and the quality of evidence supporting this innovative, yet still contentious, treatment approach. Through a careful examination, we seek to uncover how much of PRP’s promise is backed by science and how much remains speculative.

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PRP Therapy: Stimulating Hair Growth Mechanism

Platelet-rich plasma (PRP) therapy operates on a straightforward yet sophisticated mechanism to potentially reverse hair loss. The essence of this treatment lies in harnessing the body’s natural healing abilities. PRP is derived from the patient’s own blood, which is then concentrated to isolate platelets — a rich source of growth factors and stem cells.

When injected into the scalp, these growth factors and stem cells are believed to rejuvenate dormant hair follicles, stimulating them back into an active growth phase. This process is thought to not only halt hair loss but also to promote the growth of new, healthier hair strands, offering a beacon of hope for those grappling with hair thinning and loss.

Read more: PRP vs Steroid Injections for Hair Loss

PRP for Hair Loss: Promising or Premature?

The research landscape surrounding PRP injections for hair loss reveals a pattern of limited and early-stage studies. Key observations include:

  1. Lack of Large-Scale Trials: Most research on PRP’s effectiveness for hair loss lacks the robustness of large-scale clinical trials. The majority of existing studies are small in scale, which limits the generalizability of their findings.
  2. Early-Stage Promising Results: Despite the size limitations, these early studies do show promise. Many report positive outcomes, indicating that PRP could be effective in stimulating hair growth in certain conditions.
  3. Potential Biases and Limitations: A critical aspect to consider is the potential for biases and limitations within these studies. Some research may be influenced by conflicts of interest, particularly those funded by entities with a vested interest in PRP treatments. Additionally, methodological limitations, such as lack of control groups or blinding, can skew results.

In summary, while initial findings are hopeful, they are far from conclusive. The need for more comprehensive, unbiased research is clear to truly ascertain the efficacy of PRP injections for hair loss.

Efficacy of PRP: Influencing Factors Unveiled

The effectiveness of PRP therapy for hair loss is not a one-size-fits-all scenario and is influenced by several key factors:

  1. Cause and Extent of Hair Loss: The underlying cause and the degree of hair loss significantly impact PRP’s efficacy. Conditions like androgenetic alopecia may respond differently compared to other types of hair loss.
  2. PRP Preparation Methods: Variations in how PRP is prepared, including the concentration of platelets, can alter its effectiveness. Different preparation techniques can lead to differing levels of growth factors in the PRP.
  3. Injection Technique and Provider Skills: The skill and experience of the provider performing the injections play a crucial role. Proper technique in targeting the areas of the scalp and depth of injection can affect outcomes.
  4. Number of Treatments and Intervals: The frequency and total number of PRP treatments also influence results. A series of treatments, rather than a single session, often yields better outcomes, and the interval between each session can vary based on individual response.

These factors highlight the complexity of PRP therapy and underscore the importance of a personalized approach tailored to each patient’s unique situation.

Read more: Unlocking Surgical Solutions For Hair Loss

PRP’s Effectiveness Across Hair Loss Types

Research on PRP’s effectiveness in treating different types of hair loss presents a diverse picture:

  1. Androgenic Alopecia: Studies focusing on androgenic alopecia, commonly known as male or female pattern baldness, show some of the most promising results. PRP appears to be effective in stimulating hair growth and increasing hair density in many cases, although results can vary widely.
  2. Alopecia Areata: For alopecia areata, an autoimmune condition causing patchy hair loss, the evidence is more mixed. Some studies indicate that PRP can help in regenerating hair in affected areas, but the success rate is less consistent compared to androgenic alopecia.
  3. Other Hair Loss Conditions: Research on PRP for other types of hair loss, such as telogen effluvium (stress-related hair loss) or scarring alopecias, is still in nascent stages. Preliminary findings suggest potential benefits, but more robust studies are needed to draw firmer conclusions.

These variations highlight that PRP therapy’s effectiveness is not uniform across all hair loss types, and treatment outcomes can be influenced by the specific condition being treated.

Long-Term Hair Regrowth: PRP’s Durability

The long-term effectiveness of PRP therapy in hair regrowth is an area with limited data and ongoing investigation:

  1. Limited Data Beyond One Year: Most studies on PRP for hair loss do not extend beyond a one-year period. This leaves a significant gap in understanding the lasting benefits or potential decline in efficacy over the long term.
  2. Ongoing Maintenance Injections: Given the lack of long-term data, it’s often recommended that patients undergo maintenance injections to sustain results. The frequency of these maintenance sessions varies, but they are generally thought to be necessary to preserve hair density and quality achieved through initial treatments.

This aspect of PRP therapy underscores the importance of setting realistic expectations and understanding that it may require a long-term commitment with periodic treatments to maintain hair regrowth results.

Read more: Causes Of Hair Loss

Managing Expectations with PRP Hair Therapy

When considering PRP therapy for hair loss, it is crucial to manage expectations realistically:

  1. Avoiding Overhyped Claims: It’s important to steer clear of claims promising “dramatic regrowth” or a complete reversal of baldness. Such assertions are often exaggerated and not supported by the current breadth of scientific evidence.
  2. Varied Results Among Patients: The effectiveness of PRP treatment can vary significantly from one individual to another. Factors like the patient’s age, health, the extent of hair loss, and genetic factors play a critical role in determining the outcome. Some may experience notable improvements, while others may see only minimal changes.

Understanding these points helps in setting realistic goals and fosters a more informed decision-making process regarding PRP therapy for hair loss.

Combining PRP with Other Treatments: A Synergy

The role of combination treatments in enhancing the effectiveness of PRP therapy has gained attention:

  1. Microneedling: Combining PRP with microneedling, a procedure that involves creating tiny punctures in the scalp to stimulate skin repair, has shown to potentially enhance results. This combination is thought to improve the absorption of PRP and further stimulate the hair follicles.
  2. Medications: Incorporating PRP therapy with FDA-approved hair loss medications like minoxidil (Rogaine) or finasteride (Propecia) can also lead to more significant improvements. These medications work in different ways to combat hair loss, and when used in conjunction with PRP, they may offer a comprehensive approach to hair restoration.

These combination treatments suggest a synergistic approach, where the combined effects of PRP with other modalities may provide better outcomes than PRP alone. However, it’s important to consult with a healthcare professional to understand the best course of action based on individual needs and conditions.

Read more: Understanding Hair Loss

Consulting Experts Before PRP: A Must-Do

Seeking professional guidance is a critical step before considering PRP therapy for hair loss:

  1. Board-Certified Dermatologist Consultation: It is highly advisable to consult with a board-certified dermatologist before embarking on PRP therapy. Dermatologists specialize in hair and skin conditions and can provide an accurate diagnosis and assessment of your hair loss.
  2. Determining PRP Suitability: During the consultation, the dermatologist can determine whether PRP is an appropriate treatment option for your specific case. This determination is based on factors such as the type and cause of your hair loss, your overall health, and your treatment expectations.

This professional evaluation ensures that you receive a personalized and effective treatment plan, minimizing the risks and maximizing the potential benefits of PRP therapy.


In conclusion, while platelet-rich plasma (PRP) therapy has emerged as a promising option for treating various types of hair loss, the landscape of scientific research in this area remains in need of further, more extensive exploration.

The current evidence, primarily from smaller studies, suggests potential benefits, but larger, more robust clinical trials are necessary to fully understand the effectiveness and long-term implications of PRP for hair restoration.

Additionally, the growing interest in combination therapies, particularly the synergy between PRP, microneedling, and approved hair loss medications, points towards a more effective approach. This combined method could potentially enhance the efficacy of PRP, offering a more comprehensive treatment strategy.

However, it is essential for individuals considering PRP therapy to seek guidance from board-certified dermatologists to assess their suitability and set realistic expectations. As the field evolves, it is hoped that future research will provide clearer answers and establish more definitive protocols for those seeking solutions for hair loss.


UPGUYS has strict sourcing guidelines to ensure our content is accurate and current. We rely on peer-reviewed studies, academic research institutions, and medical associations. We strive to use primary sources and refrain from using tertiary references.

This article is written for informational purposes only and does not constitute medical advice. The information provided in the articles cannot and should not replace advice from a healthcare professional. Talk to your healthcare provider about any physical or mental health concerns or the risks and benefits of any treatment or medication.