Platelet-Rich Plasma for Hair — Male vs Female Results

Last updated: 5 March 2026

PRP Hair Treatment: An Evidence-Based Overview

Platelet-rich plasma (PRP) therapy has emerged as one of the most promising non-surgical treatments for hair loss, offering a biological approach to hair restoration that harnesses the body’s own healing mechanisms. By concentrating the growth factors found in your blood and injecting them into the scalp, PRP aims to stimulate dormant hair follicles, improve hair thickness, and slow the progression of thinning.

However, the results of PRP hair treatment can vary significantly between men and women — largely because the underlying causes of hair loss differ between the sexes. Understanding these differences is crucial for setting realistic expectations.

How PRP for Hair Works

The Science

PRP is prepared by drawing a small sample of your blood (typically 20-60ml) and processing it in a centrifuge to separate the platelet-rich fraction from other blood components. The resulting concentrate contains 3-5 times the normal platelet concentration, along with a cocktail of growth factors including:

• Platelet-derived growth factor (PDGF): Stimulates cell proliferation and blood vessel formation
• Transforming growth factor beta (TGF-β): Regulates cell growth and differentiation
• Vascular endothelial growth factor (VEGF): Promotes new blood vessel formation around follicles
• Epidermal growth factor (EGF): Stimulates cell growth and wound healing
• Insulin-like growth factor (IGF): Promotes hair follicle development and cycling

The Procedure

• Blood draw: A venous blood sample is taken from the arm
• Centrifugation: Blood is spun in a centrifuge for 10-15 minutes
• Preparation: The platelet-rich layer is extracted and may be activated
• Injection: PRP is injected into the scalp at multiple points across the thinning areas using fine needles or a mesotherapy gun
• Duration: The entire procedure takes approximately 45-60 minutes

Male Pattern Hair Loss and PRP

Understanding Androgenetic Alopecia in Men

Male pattern baldness (androgenetic alopecia) is caused by the effect of dihydrotestosterone (DHT) on genetically susceptible hair follicles. DHT causes follicular miniaturisation — a progressive shrinking of hair follicles that produces thinner, shorter hairs until the follicle eventually ceases to produce visible hair altogether.

The pattern typically begins at the temples and crown, progressing according to the Norwood-Hamilton classification scale. Approximately 50% of men experience noticeable hair loss by age 50.

PRP Results in Men

Research findings for PRP in male androgenetic alopecia show:

• Hair density improvement: Studies report increases of 15-30% in hair density after a course of treatments
• Hair thickness: Measurable increases in individual hair shaft diameter
• Best responders: Men in the early to moderate stages of hair loss (Norwood II-IV) with miniaturised but still-active follicles
• Limited benefit: Areas of complete baldness (smooth, shiny scalp) with no remaining follicles are unlikely to respond, as PRP cannot resurrect dead follicles
• Maintenance required: Results are not permanent; ongoing treatments are needed to sustain improvement

Typical Treatment Protocol for Men

• Initial course: 3-4 sessions spaced 4-6 weeks apart
• Maintenance: Every 4-6 months thereafter
• Results timeline: Noticeable improvement typically begins at 3-6 months, with optimal results at 12 months

Female Pattern Hair Loss and PRP

Understanding Hair Loss in Women

Female hair loss is more complex than male pattern baldness and can have multiple contributing causes:

• Androgenetic alopecia: The female pattern is typically diffuse thinning across the crown while maintaining the frontal hairline (Ludwig classification)
• Telogen effluvium: Temporary but potentially dramatic hair shedding triggered by stress, illness, hormonal changes, or nutritional deficiencies
• Hormonal factors: Pregnancy, postpartum changes, menopause, PCOS, and thyroid disorders all affect hair growth
• Iron deficiency: Common in women and a significant contributor to hair thinning
• Autoimmune conditions: Alopecia areata and other autoimmune conditions can cause patchy or diffuse hair loss

PRP Results in Women

The evidence for PRP in female hair loss is increasingly positive:

• Androgenetic alopecia: Women often respond more favourably than men to PRP, possibly because female pattern loss involves more miniaturised (but still viable) follicles and less complete follicle destruction
• Telogen effluvium: PRP may accelerate recovery by stimulating follicles to re-enter the growth (anagen) phase
• Hair density: Studies report 20-35% improvement in hair density in women — slightly better than the male average
• Hair quality: Women frequently report improved hair texture, shine, and strength in addition to increased density
• Emotional impact: Because hair loss in women carries significant psychological burden, even modest improvements can substantially improve quality of life

Typical Treatment Protocol for Women

• Initial course: 3-4 sessions spaced 4-6 weeks apart
• Maintenance: Every 4-6 months (some women require less frequent maintenance than men)
• Results timeline: Reduced shedding often noticed within 4-8 weeks; visible density improvement at 3-6 months

Comparing Male and Female Outcomes

Key differences between male and female PRP outcomes include:

• Response rate: Women tend to show a slightly higher overall response rate, potentially due to the different pattern and mechanism of hair loss
• Speed of response: Women often notice reduced shedding earlier than men notice regrowth
• Combination therapy: Men frequently combine PRP with finasteride and minoxidil; women typically combine with minoxidil and nutritional optimisation
• Psychological impact: Both genders report significant improvement in confidence and quality of life, but the emotional impact may be particularly profound for women in whom hair loss is less socially normalised

Optimising PRP Results

• Address underlying causes: Correct iron deficiency, thyroid dysfunction, and hormonal imbalances before or alongside PRP treatment
• Use adjunct therapies: Minoxidil, nutritional supplements (biotin, zinc, vitamin D), and anti-androgen medications where appropriate can enhance PRP results
• Commit to the full course: A single PRP session is unlikely to produce significant results — the full initial course and maintenance programme is essential
• Choose a quality PRP system: Not all PRP preparation methods are equal. Double-spin centrifugation systems that produce higher platelet concentrations tend to yield better results
• Be patient: Hair growth is a slow process. It takes time for miniaturised follicles to respond and produce visible new growth

Frequently Asked Questions

Does PRP hurt?

Most patients describe PRP scalp injections as mildly uncomfortable rather than painful. Topical anaesthetic cream or local anaesthetic nerve blocks can be applied beforehand to minimise discomfort. The procedure is well tolerated by the vast majority of patients.

Are there any side effects?

Because PRP uses your own blood, the risk of allergic reaction is virtually zero. Common side effects include temporary scalp tenderness, mild swelling, and occasionally minor bruising at injection sites. These typically resolve within 24-48 hours.

How much does PRP hair treatment cost?

PRP hair treatment typically costs £300-£600 per session in the UK. An initial course of 3-4 sessions represents an investment of £900-£2400, with ongoing maintenance costs thereafter.

Can PRP be combined with a hair transplant?

Yes. Many surgeons use PRP as an adjunct to hair transplant surgery, both to optimise the scalp environment before the procedure and to support graft survival and growth afterwards. PRP is also used to maintain and protect existing non-transplanted hair.

Who should avoid PRP hair treatment?

PRP is not suitable for patients with blood disorders, active scalp infections, autoimmune conditions affecting the scalp, or those on anticoagulant medication. A thorough medical history review during consultation will determine your suitability.