The Science Behind PRP Therapy — Vampire Facial Explained

Last updated: 5 March 2026

What Is PRP Therapy?

Platelet-Rich Plasma (PRP) therapy — colloquially known as the “Vampire Facial” — is a regenerative treatment that harnesses your body’s own healing mechanisms to rejuvenate the skin. Made famous by celebrity endorsements and dramatic social media imagery, PRP has moved well beyond the hype to become one of the most scientifically validated treatments in aesthetic medicine.

At Axiom Aesthetics on Harley Street, London, we offer PRP therapy as both a standalone treatment and as a complement to other procedures. But what exactly is PRP, how does it work at a cellular level, and what results can you realistically expect? Let’s dive into the science.

Understanding Platelet-Rich Plasma: The Science

What Are Platelets?

Platelets are one of the three main types of blood cells (alongside red blood cells and white blood cells). While they’re best known for their role in blood clotting, platelets are also powerhouses of regeneration. Each platelet contains hundreds of proteins called growth factors — biological signalling molecules that instruct your body to repair and regenerate tissue.

Key Growth Factors in PRP

When concentrated and activated, the platelets in PRP release a cocktail of growth factors that drive tissue regeneration:

• PDGF (Platelet-Derived Growth Factor) — Stimulates cell replication, blood vessel formation, and collagen synthesis
• TGF-β (Transforming Growth Factor Beta) — Promotes extracellular matrix formation, including collagen and elastin
• VEGF (Vascular Endothelial Growth Factor) — Stimulates the formation of new blood vessels, improving blood supply to the skin
• EGF (Epidermal Growth Factor) — Promotes cell growth, differentiation, and wound healing
• FGF (Fibroblast Growth Factor) — Stimulates fibroblast proliferation — the cells responsible for producing collagen
• IGF (Insulin-Like Growth Factor) — Regulates cell growth and has anti-ageing properties

PRP typically contains 3–5 times the concentration of platelets found in normal blood, meaning a significantly higher concentration of these regenerative growth factors.

The PRP Treatment Process

Step 1: Blood Collection

A small volume of blood (typically 10–20ml — roughly the same as a standard blood test) is drawn from your arm using a sterile needle. This is quick, simple, and no more uncomfortable than a routine blood draw.

Step 2: Centrifugation

The blood sample is placed in a specialised centrifuge — a machine that spins at high speed to separate the blood into its component layers. After spinning for approximately 10–15 minutes, three distinct layers form:

• Top layer: Platelet-poor plasma (PPP) — clear, straw-coloured fluid
• Middle layer: Platelet-rich plasma (PRP) — the golden concentrate we’re after
• Bottom layer: Red blood cells

The PRP layer is carefully extracted and prepared for application. The entire preparation process takes approximately 15–20 minutes.

Step 3: Application

PRP can be delivered to the skin in several ways, depending on the treatment goals:

• Microinjection — PRP is injected directly into the skin at multiple points using a fine needle, targeting specific areas of concern
• Microneedling + PRP (the “Vampire Facial”) — A microneedling device creates thousands of tiny channels in the skin, and PRP is applied topically, allowing the growth factors to penetrate deeply
• Combined with fillers or fat transfer — PRP can be mixed with other treatments to enhance their regenerative effects

How PRP Rejuvenates the Skin

Once delivered into the skin, PRP triggers a cascade of biological processes:

1. Inflammatory Phase (Days 1–3): The concentrated growth factors create a controlled inflammatory response, signalling the body to begin its repair process. You may notice mild redness and swelling during this phase.
2. Proliferative Phase (Days 3–21): Fibroblasts (collagen-producing cells) are activated and begin producing new collagen, elastin, and hyaluronic acid. New blood vessels form, improving circulation and oxygen delivery to the skin.
3. Remodelling Phase (Weeks 3–12+): The newly formed collagen matures and organises, progressively improving skin firmness, texture, and tone. This is why PRP results continue to improve for several months after treatment.

What Can PRP Treat?

PRP therapy has a remarkably broad range of aesthetic applications:

• Fine lines and wrinkles — Particularly around the eyes, mouth, and forehead
• Skin texture and tone — Improving roughness, dullness, and uneven pigmentation
• Acne scarring — Stimulating collagen remodelling to fill and smooth scars
• Under-eye dark circles and hollowing — Improving skin quality in the delicate periorbital area
• Stretch marks — Promoting collagen regeneration in affected areas
• Hair loss (alopecia) — Stimulating dormant hair follicles when injected into the scalp
• Skin laxity — Improving firmness through collagen and elastin stimulation
• Post-procedure healing — Accelerating recovery after laser treatments or surgery

The Results Timeline

One of the most important things to understand about PRP therapy is that it works with your biology, not instead of it. Results are gradual and cumulative:

• Week 1: Initial glow and improved hydration (partly from the plasma itself)
• Weeks 2–4: Skin begins to feel smoother and look more radiant
• Months 1–2: Noticeable improvement in texture, fine lines, and skin quality
• Months 2–3: Collagen remodelling continues; optimal results become apparent
• Months 3–6: Full results visible — firmer, smoother, more youthful-looking skin

Recommended Treatment Protocol

For optimal results, we typically recommend a course of 3 treatments spaced 4–6 weeks apart, followed by a maintenance session every 6–12 months. However, many patients notice improvement even after a single session.

What Does the Research Say?

PRP therapy is one of the most well-researched treatments in regenerative aesthetics. Key findings from the scientific literature include:

• A 2023 systematic review in the Journal of Cosmetic Dermatology confirmed that PRP significantly improves skin texture, wrinkle severity, and overall skin quality
• Research published in Dermatologic Surgery demonstrated that PRP combined with microneedling produces superior results compared to microneedling alone for acne scarring
• Multiple studies have shown PRP to be effective for androgenetic alopecia (pattern hair loss), with measurable increases in hair density and thickness
• PRP has been used in orthopaedic and sports medicine for over two decades, with a well-established safety profile

Is PRP Safe?

PRP has an excellent safety profile because it uses your own blood — there is virtually no risk of allergic reaction, rejection, or disease transmission. The most common side effects are:

• Redness and mild swelling at the treatment site (resolves within 24–48 hours)
• Minor bruising (particularly with microinjection)
• Temporary tenderness or sensitivity
• Rarely, infection (minimised by proper sterile technique)

PRP may not be suitable for patients with blood disorders, those on anticoagulant therapy, active skin infections, or certain autoimmune conditions. A thorough medical assessment is always conducted before treatment.

PRP vs Other Skin Rejuvenation Treatments

How does PRP compare to other popular treatments?

• PRP vs Profhilo: Both improve skin quality, but through different mechanisms. Profhilo uses injectable hyaluronic acid, while PRP uses your own growth factors. They can be combined beautifully.
• PRP vs Chemical Peels: Peels work from the surface down (exfoliation); PRP works from within (regeneration). They complement each other well.
• PRP vs Laser: Laser resurfacing removes damaged skin layers; PRP stimulates biological regeneration. PRP is often used post-laser to accelerate healing.

What to Expect at Your PRP Appointment

A typical PRP session at Axiom Aesthetics takes approximately 60–90 minutes. Here’s what the experience looks like:

1. Arrival and preparation — numbing cream applied to the treatment area (20–30 minutes to take effect)
2. Blood draw — quick and simple
3. PRP preparation — 15–20 minutes whilst the centrifuge works
4. Treatment — 30–45 minutes depending on the application method
5. Post-treatment care instructions and SPF application

Aftercare Tips

• Avoid washing the treated area for 6–8 hours post-treatment
• Do not apply makeup for at least 12 hours
• Avoid direct sun exposure and apply SPF 50 diligently for 2 weeks
• Avoid strenuous exercise, saunas, and swimming pools for 48 hours
• Keep the skin hydrated with a gentle, non-active moisturiser
• Avoid retinoids, AHAs, and other active skincare for 5–7 days

Experience PRP at Axiom Aesthetics

PRP therapy represents the intersection of cutting-edge science and natural rejuvenation. By leveraging your body’s own regenerative capacity, it offers a uniquely natural approach to achieving healthier, more youthful-looking skin.

Book your PRP consultation at our Harley Street clinic and discover how this remarkable treatment can work for you.

Disclaimer: This article is for informational purposes only and does not constitute medical advice. PRP therapy results vary between individuals. A consultation with a qualified medical professional is required before treatment. All procedures at Axiom Aesthetics are performed by registered medical practitioners.