PRP for Acne Scar Treatment: Efficacy and Expectations 2026

Acne Scars: Pathology, Classification and Treatment Selection

An acne scar is a permanent tissue change resulting from inflammatory acne lesions destroying the collagen structure in the dermis and subcutis. Accurate classification of scar types is critically important for treatment selection and realistic outcome expectations:

Scar Type	Appearance	Depth	Response to PRP	Additional Approach
Icepick	Narrow, deep, sharply pointed channel	Dermis/subcutis	Moderate	Punch excision or TCA CROSS
Boxcar	Wide, flat-bottomed, steep-edged pit	Superficial–mid dermis	Good	Fractional laser combined
Rolling	Gently sloped, fibrous tissue attachment	Mid dermis	Very good	Subcision + PRP ideal
Atrophic macule	Flattened, colour-changed area	Superficial epidermis	Very good	PRP + microneedling sufficient
Hypertrophic / Keloid	Raised, red-pink, firm	Above dermis (overgrowth)	Limited	Corticosteroid injection

What Is PRP? Preparation and Growth Factors

PRP (Platelet Rich Plasma) is an autologous biological product in which the platelet concentration of the patient's venous blood is raised to 4–8 times the baseline blood level through a specialised centrifuge process. Being derived entirely from the person's own blood minimises the risk of allergic reaction and infection. Key growth factors and their effects on acne scars:

• PDGF (Platelet-Derived Growth Factor): The main trigger of fibroblast proliferation and collagen synthesis; helps fill the tissue cavity of atrophic scar.
• TGF-β1 and TGF-β3: Supports tissue renewal and epithelialisation; TGF-β3 promotes organised collagen structure rather than fibrosis.
• VEGF (Vascular Endothelial Growth Factor): Resolves hypoxia in scar tissue through neovascularisation and improves tissue nutrition.
• EGF (Epidermal Growth Factor): Accelerates keratinocyte proliferation and surface renewal.
• IGF-1 (Insulin-Like Growth Factor): Supports general cellular growth and ECM (extracellular matrix) synthesis processes.
• HGF (Hepatocyte Growth Factor): Reduces scar tissue density through its anti-fibrotic effect.

Molecular Mechanism of Action of PRP on Acne Scars

In atrophic acne scars, the core problem is the destruction and insufficient renewal of collagen and elastin fibres within the dermis. PRP injection addresses this problem through the following biological cascade:

1. Activated platelets release growth factors from alpha granules (α-granule degranulation).
2. PDGF and TGF-β1 activate fibroblasts that form organised collagen structure rather than fibrosis.
3. VEGF triggers new capillary network formation (angiogenesis) that resolves hypoxia in scar tissue.
4. Increased blood flow strengthens tissue nutrition and healing capacity.
5. HGF remodels existing fibrous scar tissue; scar edges soften and depth decreases.
6. ECM (extracellular matrix) remodelling provides gradual scar improvement through cumulative session effects.

Microneedling + PRP: The Gold Standard Combination

Microneedling (dermapen / microneedling) opens numerous controlled micro-channels into the skin, greatly increasing both collagen induction (dermal injury response) and topical product penetration. When combined with PRP, two mechanisms work synergistically:

• Micro-channels allow PRP to reach the optimal depth (0.5–2.0 mm); growth factors remain concentrated in the dermal layer where they can be most effective.
• The controlled injury response created by microneedling (PRPF release, TGF-β increase) overlaps with PRP's biological cascade; the total effect is far greater than the arithmetic sum of the components.
• Standard dermapen parameters for acne scars: needle depth 1.0–2.0 mm (depending on scar severity), speed 3–5, 3–4 passes.

In an RCT published in the Journal of Cosmetic Dermatology in 2019, the ECCA (Echelle d'Evaluation Clinique des Cicatrices d'Acné) score in the microneedling + PRP group fell significantly more than in the microneedling-alone group (60% vs 40% improvement, p<0.05).

Fractional Laser and PRP Combination

Fractional laser (CO2 or Er:YAG) provides powerful remodelling effect especially for deep boxcar and icepick scars. PRP is applied in the same session or immediately afterwards to accelerate the post-laser healing process, shorten redness duration and reduce the risk of post-laser PIH. This combination is particularly preferred in resistant cases and patients with higher improvement expectations. CO2 laser + PRP combination reports the highest improvement rates (60–75%) among all acne scar combination approaches.

Subcision + PRP: Special Protocol for Rolling Scars

Rolling scars are characterised by deep fibrous connective tissue tethering; this tethering requires the mechanical cutting and release of dermal-subcutaneous connective tissue (fibrous bands). Subcision (using a Nokor needle or cannula) releases the scar surface by cutting these fibrous bands; subsequent PRP injection optimises the healing environment and supports new organised collagen synthesis. At Virtuana Clinic, subcision + PRP combination is applied as the first-choice protocol in rolling scar cases.

Number of Sessions, Protocol and Realistic Expectations

Parameter	Detail
Starting number of sessions	3–6 sessions (depending on scar type, depth and density)
Session interval	Every 3–4 weeks
First visible improvement	After 2nd–4th session (weeks 4–10)
Optimal result time	3–6 months after last session (collagen remodelling continues)
Maintenance session	Every 6–12 months
Expected improvement rate	30–45% (PRP alone) / 50–65% (PRP + microneedling) / 60–75% (PRP + CO2)
Complete elimination of scars	Not expected; marked flattening and quality improvement is the goal

PRP Application Techniques

PRP is applied via two main routes in acne scar treatment:

• Direct intradermal injection: Multiple depot injections with a 30-gauge fine needle into each scar or within the region. Direct application into the scar cavity is performed especially for rolling and boxcar scars.
• Spreading PRP over dermapen: PRP is spread on the surface while the dermapen is active; the created micro-channels transport PRP into the dermis. Practical and uniform distribution over wide areas.

At Virtuana Clinic, both methods can be combined in the same session in an area-specific manner, depending on scar type and distribution.

Pre- and Post-Procedure Preparation Protocol

Pre-procedure (2 weeks):

• Stop aspirin, ibuprofen and high-dose omega-3 use (affects platelet function).
• Active acne lesions must first be brought under control with a dermatologist.
• Retinoid users should discontinue the product 5–7 days before the procedure.
• Stop alcohol 24 hours before the procedure; ensure hydration.

Post-procedure care:

• Do not wet the application area for 24 hours; do not wash your face.
• Do not apply make-up for 48–72 hours; mineral powder may be an exception.
• Redness and mild swelling resolve within 1–3 days; these are normal signs of healing.
• SPF 50+ sunscreen should be maintained in daily use from the morning of the session; UV sensitivity is particularly increased after microneedling.
• Avoid saunas, steam baths and intense exercise for 1 week.

Who Is This Treatment Not Suitable For?

• Active inflammatory acne (can be performed at least 1–2 months after lesions are brought under control)
• Thrombocytopaenia, platelet dysfunction or active bleeding disorders
• Active herpes simplex infection (in the facial area)
• Pregnancy and breastfeeding
• Active corticosteroid or anticoagulant medication use (requires assessment)
• History of keloid or hypertrophic scar (careful assessment required)

Comparative Efficacy of Treatment Options

Approach	Indication	Expected Improvement	Downtime
PRP alone	Mild–moderate scar, sensitive skin	30–45%	1–2 days
PRP + Microneedling	Moderate–deep rolling/boxcar	50–65%	2–4 days
PRP + Fractional CO2	Deep, widespread scars	60–75%	5–10 days
PRP + Subcision	Rolling scars with fibrous tethering	55–70%	3–5 days
PRP + TCA CROSS	Icepick scars	45–65%	7–10 days

PRP Acne Scar Protocol at Virtuana Clinic

Virtuana Clinic in Izmit/Kocaeli manages PRP acne scar treatment with personalised protocols based on scar type analysis. Each patient's scars are assessed individually clinically and dermoscopically. Subcision is offered as a preliminary step for rolling scars; fractional laser is offered as a combined option for deep boxcar and icepick scars. Standardised photography and comparative assessments at months 3 and 6 are conducted for patients coming from Kocaeli and surrounding provinces.

Frequently Asked Questions

Can PRP completely clear acne scars? Complete disappearance should not be expected. The realistic goal is marked flattening and improvement of skin quality; the improvement rate ranges from 30–75% and depends on scar type.

How many sessions are needed? For most patients 4–6 sessions are sufficient. For deep or widespread scars, additional sessions or combination treatments may be required.

When can I return to social life after the procedure? 24–48 hours after PRP alone + mild dermapen; 5–10 days may be required with fractional laser combination.

Can I have PRP done while I have active spots? No. Active inflammatory lesions must first be brought under control; otherwise the healing process may be negatively affected and the risk of infection increases.

This article is for informational purposes only. Please consult a qualified physician for treatment decisions.