Platelet-rich plasma, better known as PRP, is one of the most established treatments in regenerative medicine. Unlike newer cell-free technologies, PRP has been used clinically for more than two decades, starting in orthopedic surgery and oral maxillofacial procedures before expanding into dermatology, hair restoration, and sexual wellness.

Part of PRP’s appeal is that it uses the patient’s own blood. There’s no donor tissue, no synthetic material, and no foreign biologic product — just a concentrated dose of your own platelets and growth factors, reintroduced into the area that needs support. That simplicity has made PRP one of the more accessible and well-studied regenerative options available today.

This guide explains what PRP is, how it’s prepared and administered, what conditions it’s used for, what current research actually supports, and how it compares with newer regenerative options like exosome therapy. The goal is a clear, balanced explanation — not a sales pitch — so you can have an informed conversation with your provider.

Medical disclaimer: This article is for educational purposes only and does not constitute medical advice. PRP outcomes vary by individual, diagnosis, and treatment protocol. Consult a qualified, licensed physician for a personal evaluation before starting any regenerative treatment.

• PRP is a concentrated preparation of a patient’s own platelets, plasma, and growth factors, produced by drawing and processing blood in a centrifuge.
• It is used clinically in orthopedics, dermatology, hair restoration, and sexual wellness, with the strongest evidence base in orthopedic and dermatologic applications.
• PRP works by delivering growth factors that support tissue repair, collagen production, and cell signaling at the treatment site.
• It is an autologous therapy (from the patient’s own body), which generally gives it a favorable safety profile compared with donor-derived products.
• Evidence quality varies by application — some uses (like knee osteoarthritis and androgenetic alopecia) have more robust research than others.
• PRP is often compared with newer options such as exosome therapy, which uses donor cell-derived vesicles rather than the patient’s own blood.

Definition: Platelet-rich plasma (PRP) is a concentration of platelets, plasma, and associated growth factors derived from a patient’s own blood, obtained by centrifuging a blood sample to separate and concentrate the platelet-rich layer.

Whole blood contains red blood cells, white blood cells, plasma, and platelets. Platelets are best known for their role in clotting, but they also store and release dozens of growth factors and signaling proteins when activated — including platelet-derived growth factor (PDGF), transforming growth factor-beta (TGF-β), vascular endothelial growth factor (VEGF), and epidermal growth factor (EGF).

When blood is spun in a centrifuge, its components separate by density. This allows clinicians to isolate a layer with a platelet concentration several times higher than that found in normal circulating blood. This concentrated layer — PRP — is then injected or applied to the treatment area, where the growth factors it contains are released and may support tissue repair, collagen synthesis, and cell signaling.

PRP is classified as an autologous biologic product, meaning it is derived from and returned to the same patient. This distinguishes it from donor cell-derived products like exosome therapy, and generally simplifies its regulatory and safety profile, since there is no risk of donor-related immune reaction or disease transmission.

Key takeaway: PRP works by concentrating a patient’s own healing-related growth factors and reintroducing them at the treatment site to support tissue repair and regeneration.

1. Blood draw: A small sample of blood is drawn from the patient’s arm, similar to a routine blood test.
2. Centrifugation: The sample is spun in a centrifuge, separating red blood cells, white blood cells, and the platelet-rich plasma layer.
3. Isolation: The platelet-rich layer is drawn off using a sterile technique, sometimes with a second spin to further concentrate platelets.
4. Activation (optional): Some protocols activate the PRP with calcium chloride or thrombin to trigger growth factor release before application; others rely on natural activation once injected into tissue.
5. Application: The prepared PRP is injected into the target area (joint, scalp, or tissue) or applied topically alongside microneedling, depending on the intended use.
6. Recovery: Most patients resume normal activity the same day, with mild soreness or swelling possible at the injection site for 24–48 hours.

The entire process, from blood draw to application, typically takes 30–60 minutes and is performed in an outpatient clinical setting.

PRP therapy has been studied and applied across several areas of medicine. Evidence quality differs by application.

Orthopedic and Joint Conditions

PRP is widely used for tendon injuries (such as tennis elbow and Achilles tendinopathy) and for knee osteoarthritis. It is one of the more extensively studied uses of PRP, with multiple clinical trials evaluating pain and function outcomes, though results across studies are mixed and protocols vary.

Hair Restoration

PRP is used to treat androgenetic alopecia (pattern hair loss) in both men and women. It is typically injected into the scalp in a series of sessions, based on the theory that growth factors support follicle signaling and blood supply. For a detailed look at regenerative hair treatments, see our guide to exosome therapy for hair loss, which also compares PRP directly with exosome-based approaches.

Skin Rejuvenation

PRP is used in aesthetic medicine, sometimes called a “vampire facial” when combined with microneedling, to support collagen production and improve skin texture and tone. Learn more about related options on our skin rejuvenation and skin care pages.

Acne Scars and Wrinkles

PRP, often combined with microneedling, has been studied for improving the appearance of atrophic acne scars and fine lines by stimulating collagen remodeling. See our pages on acne scar treatment and wrinkle treatment for more on regenerative options for these concerns.

Facial Aesthetics and Anti-Aging

PRP is sometimes incorporated into broader facial rejuvenation protocols aimed at improving skin quality and supporting a more youthful appearance. Related information is available on our facial aesthetics and anti-aging pages.

Sexual Wellness

PRP is used in some sexual wellness protocols (sometimes referred to by trademarked procedure names) aimed at addressing concerns such as erectile function or vaginal tissue health, based on the premise that growth factors may support tissue and blood vessel health in these areas. Evidence in this application remains more limited than in orthopedic or dermatologic uses. Learn more on our sexual wellness page.

Pigmentation

Some practitioners use PRP as part of broader treatment protocols for skin tone concerns, generally combined with other modalities rather than as a standalone treatment. See our pigmentation page for related information.

Key takeaway: PRP’s applications range from orthopedics to aesthetics to sexual wellness, but the strength of supporting evidence varies significantly by use case — orthopedic and hair restoration applications currently have the most robust research behind them.

Orthopedic evidence: PRP for knee osteoarthritis and tendinopathies has been studied in numerous randomized controlled trials and systematic reviews, with many showing modest improvements in pain and function compared with placebo, though results are inconsistent across studies due to differences in PRP preparation methods and patient populations.

Hair restoration evidence: Multiple clinical studies and systematic reviews have evaluated PRP for androgenetic alopecia, generally reporting improvements in hair density and thickness compared with baseline or placebo, making it one of the better-supported regenerative options for hair loss, alongside established medical treatments like minoxidil and finasteride.

Dermatologic evidence: Studies on PRP combined with microneedling for acne scars and skin rejuvenation report generally favorable results, though study sizes are often small and comparison protocols vary.

Sexual wellness evidence: Research in this area is more preliminary, with small studies and case series rather than large randomized trials; patients should approach marketing claims in this space with particular caution.

Overall assessment: PRP has one of the longer track records among regenerative therapies, but — as with most regenerative treatments — protocols are not fully standardized across clinics, and outcomes can vary based on preparation method (platelet concentration, presence of white blood cells, activation technique) and the condition being treated.

Key takeaway: PRP is generally considered a more established regenerative option than newer technologies, but evidence strength still varies considerably depending on the specific condition being treated.

Myth: PRP is a new, experimental treatment. Fact: PRP has been used clinically since the 1980s and 1990s, initially in oral surgery and orthopedics, making it one of the more established regenerative therapies available today.

Myth: PRP results are guaranteed. Fact: Results vary by individual, condition, and severity; PRP is not a guaranteed cure for any condition it is used to treat.

Myth: PRP and exosome therapy are the same thing. Fact: PRP uses a patient’s own blood-derived platelets, while exosome therapy uses donor cell-derived vesicles; they work through overlapping but distinct mechanisms.

Myth: PRP carries the same risks as donor-derived biologics. Fact: Because PRP is autologous (from the patient’s own blood), it carries a lower risk of immune reaction or disease transmission compared with donor-derived products.

Myth: One PRP session is enough for lasting results. Fact: Most protocols involve a series of sessions (commonly 3–4), followed by maintenance treatments depending on the condition and individual response.

Many providers use PRP and exosome therapy together in the same treatment plan, particularly for hair restoration and skin rejuvenation, based on the premise that the two may act through complementary signaling pathways — though evidence for combined protocols is still developing. For a deeper dive into exosome-based regenerative treatment, visit our exosome therapy overview page.

Potentially good candidates include:

• Patients with early to moderate androgenetic alopecia or diffuse thinning
• Individuals with mild to moderate knee osteoarthritis or tendon injuries
• Patients seeking non-surgical support for skin texture, fine lines, or acne scarring
• Patients interested in an autologous (self-derived) regenerative option

Who may not benefit:

• Patients with advanced joint degeneration who may require surgical intervention
• Individuals with completely inactive hair follicles or long-standing scarring alopecia
• Patients with certain blood disorders or active infections at the treatment site, who may not be suitable candidates for PRP

A consultation with a qualified provider, including relevant bloodwork and a physical or scalp assessment, helps determine candidacy.

• Mild pain or discomfort at the injection or blood draw site
• Temporary swelling or bruising
• Infection risk, low with proper sterile technique but present with any injection procedure
• Variable response, as with all regenerative treatments
• Lack of full protocol standardization across clinics, which can affect consistency of results

Because PRP is derived from the patient’s own blood, it generally carries a lower risk profile than donor-derived biologic treatments, though it is not risk-free.

• Week 1–2: Mild soreness resolves; no visible results yet expected.
• Month 1: Early cellular changes may be occurring, though visible improvement is often not yet apparent.
• Month 3: Initial signs of improvement (in hair density, skin texture, or joint comfort) may become noticeable in responsive patients.
• Month 6: More established improvement is typically assessed at this stage for most applications.
• Month 12: Full anticipated benefit is generally evaluated around this point, with maintenance sessions often recommended.

Results depend heavily on the condition being treated, its severity, the number of sessions completed, and individual biological response. Not every patient will experience the same degree of improvement.

To explore related regenerative treatments across Viezec, you may find these pages helpful:

• Learn more about exosome therapy as a complementary regenerative option
• Read our detailed guide on exosome therapy for hair loss, which compares PRP and exosome approaches for hair restoration
• Explore aging and longevity treatments
• Discover skin rejuvenation and anti-aging treatments
• Learn about facial aesthetics and sexual wellness applications
• Read about skin care, acne scars, wrinkles, and pigmentation treatment options

If you’d like to discuss whether PRP, exosome therapy, or a combined approach is right for you, we recommend scheduling a consultation with a qualified regenerative medicine specialist to review your specific condition and goals.

PRP remains one of the most established and accessible regenerative treatments available, with a longer clinical track record than many newer biologic therapies. Because it uses a patient’s own blood, it offers a generally favorable safety profile, though — like all regenerative treatments — it is not a guaranteed fix and works best as part of an individualized plan based on an accurate diagnosis.

Whether PRP is the right choice, or whether it makes more sense alongside options like exosome therapy or other established treatments, depends on the specific condition being addressed, its severity, and your personal health profile. A qualified specialist can help you weigh these options based on current evidence rather than marketing claims.