If you’ve started researching hair restoration in Roseville, you’ve probably run into more acronyms than answers — PRP, PRF, PDRN, exosomes. They all promise to wake up thinning hair follicles, and they all use some version of the words “growth factors” and “regenerative.” But they are not the same treatment, and the right one for you depends on how advanced your thinning is, what you’re trying to achieve, and how your body responds.
This post breaks down what each treatment actually is, how they differ, and how to think about which one fits your situation. At Lotus MD, Dr. Sanghera evaluates each patient individually before recommending a hair restoration plan — because a treatment that works well for early thinning isn’t necessarily the right fit for more advanced hair loss, and vice versa.
What Causes Hair Thinning?
Before comparing treatments, it helps to understand what they’re actually treating. Most non-scarring hair loss — including androgenetic alopecia (male and female pattern hair loss) — happens gradually as hair follicles miniaturize, shortening the growth phase of the hair cycle and producing thinner, shorter strands over time. Genetics, hormones, stress, and reduced blood supply to the scalp all play a role.
Regenerative treatments like PRP, PRF, PDRN, and exosomes don’t work like a hair transplant, which physically relocates follicles. Instead, they aim to improve the biological environment around existing follicles — blood supply, inflammation, and cellular signaling — to help follicles that are still viable but underperforming become more active again. That’s an important distinction: these treatments generally work best on follicles that are miniaturized, not follicles that are gone.
PRP: Platelet-Rich Plasma
PRP is the most established of these treatments and the one most people have heard of. It starts with a standard blood draw. The blood is spun in a centrifuge at high speed, which separates out a concentrated layer of platelets — the blood component richest in growth factors involved in healing and tissue repair. That platelet-rich layer is then injected into areas of scalp thinning.
Because PRP is prepared with an anticoagulant to keep it in liquid form, its growth factors are released quickly after injection — often within hours. That fast release can produce visible improvements in hair thickness and density over a course of treatment, but it also means the effect doesn’t linger as long at the cellular level, which is why PRP protocols typically involve an initial series of monthly sessions followed by periodic maintenance visits.
Best suited for: Early-stage thinning where follicles are still active and responsive.
Platelet-Rich Fibrin
PRF is often described as the next generation of PRP, and the difference comes down to how the blood is processed. PRF is spun at a lower centrifuge speed and prepared without an anticoagulant. That gentler process preserves more of the blood’s healing components — not just platelets, but white blood cells and some stem cells — and allows the sample to form a fibrin matrix: a natural, web-like scaffold.
That fibrin matrix is the key difference. Instead of releasing its growth factors all at once, it acts as a slow-release system, delivering regenerative signals to the scalp gradually over several weeks rather than hours. In practice, this can mean a more sustained effect from each session, which is one reason some patients require fewer maintenance visits over time compared to PRP alone.
Best suited for: Early-to-moderate thinning, especially for patients who want a more sustained effect between sessions.
PDRN: Polydeoxyribonucleotide
PDRN takes a different approach entirely — it isn’t derived from your own blood. It’s a purified DNA fragment, most commonly sourced from salmon, that is structurally similar enough to human DNA to be highly biocompatible. PDRN works primarily by activating a cellular pathway (the adenosine A2A receptor) that supports the formation of new blood vessels and reduces local inflammation.
For the scalp, that translates to better blood supply reaching the follicle — which matters because a miniaturizing follicle is, in part, a poorly nourished one. PDRN results tend to be gradual and cumulative, typically built through a course of sessions rather than a single visit, and it’s frequently used alongside other regenerative treatments rather than as a standalone protocol.
Best suited for: Supporting scalp health and blood supply as part of a broader treatment plan.
Exosomes: Cell-Derived Signaling
Exosomes are the newest and most talked-about option in this category. Unlike PRP and PRF, they aren’t made from your own blood — they’re tiny extracellular vesicles derived from stem cells, functioning essentially as cellular messengers. When applied to the scalp (often paired with microneedling to improve absorption), exosomes deliver a concentrated package of proteins, growth factors, and signaling molecules that instruct surrounding cells to shift into repair mode.
Because exosomes are a newer category in regenerative aesthetics, the research base is still growing compared to PRP’s decades of clinical use. Early evidence and clinical experience are promising, particularly as a complement to other treatments, but this is an area where an evolving evidence base is worth being upfront about.
Best suited for: Patients looking for a non-blood-derived option, often as part of a combination protocol.
How the Treatments Compare
| Treatment | Source | Growth factor release | Typical protocol |
|---|---|---|---|
| PRP | Your own blood (platelets) | Fast — hours | Initial series + periodic maintenance |
| PRF | Your own blood (platelets + fibrin matrix) | Slow — weeks | Initial series, often fewer maintenance visits |
| PDRN | Purified salmon-derived DNA | Gradual, cumulative | Course of sessions |
| Exosomes | Stem cell–derived vesicles | Signaling-based, gradual | Varies, often combined with other treatments |
Which Treatment Is Right for You?
This is exactly the question a proper evaluation is meant to answer, and it depends on more than one factor:
Stage of hair loss: Early, diffuse thinning generally responds differently than more advanced miniaturization — and a treatment plan should reflect where you actually are, not a generic protocol.
Male vs. female pattern hair loss: The underlying hormonal and genetic drivers differ between male and female pattern hair loss, which can affect how a treatment plan is built and what results are realistic.
Your goals and timeline: Some patients want the fastest visible change and are comfortable with more frequent sessions; others prefer a slower, more sustained approach with fewer visits.
What you’re realistically a candidate for: Regenerative treatments work on follicles that are miniaturized but still viable — a scalp exam is what determines whether that’s the case in areas of concern.
At Lotus MD, hair restoration starts with PRP hair restoration, evaluated and administered under Dr. Sanghera’s direct care. During your consultation, Dr. Sanghera will assess your scalp, discuss your history and goals, and build a plan around what’s appropriate for your stage of hair loss.
Frequently Asked Questions
What’s the main difference between PRP and PRF for hair restoration?
Both use your own blood, but they’re processed differently. PRP is spun at high speed with an anticoagulant, releasing growth factors quickly. PRF is spun more gently without an anticoagulant, forming a fibrin matrix that releases growth factors gradually over several weeks.
Is PDRN the same thing as PRP?
No. PRP is derived from your own blood; PDRN is a purified DNA-based compound, most often sourced from salmon, that works through a different biological pathway focused on blood supply and tissue repair.
Are exosomes safe for hair restoration?
Exosome therapy is a newer category in regenerative aesthetics with a growing but still-developing body of research compared to PRP’s longer clinical track record. As with any treatment, candidacy and safety should be discussed directly with your provider.
Does this work for female pattern hair loss, not just male pattern baldness?
Yes — regenerative treatments are used for both male and female pattern hair loss. The right protocol depends on your specific pattern of thinning, which is assessed during your consultation.
How many sessions will I need?
This varies by treatment and by individual. PRP and PRF typically involve an initial series of sessions spaced several weeks apart, followed by maintenance visits. Dr. Sanghera will outline an expected timeline based on your evaluation.
How do I get started?
The first step is a consultation at our Roseville-area office, where Dr. Sanghera will evaluate your scalp and hair loss pattern and recommend a plan. Visit our PRP hair restoration page or call [+1 (916) 249-7903](tel:+19162497903) to book.
*Disclaimer: This article is for informational purposes only and does not constitute medical advice. Candidacy for PRP, PRF, PDRN, or exosome-based treatments should be determined through a physician evaluation. Results vary by individual.*
