Who each one suits
Finasteride suits men who want the most proven medicine for slowing male pattern hair loss, especially at the crown, and who are comfortable taking a pill every day for as long as they want to keep the results. PRP suits men who want to avoid a daily drug, who are worried about sexual side effects, or who have tried finasteride and stopped. It also suits men already on finasteride who want extra density. PRP does not block DHT, so on its own it does less to stop the underlying process. That is why many men use both.
PRP and finasteride compared
| Finasteride (Propecia) | PRP for hair | |
|---|---|---|
| What it is | 1 mg tablet taken daily | Your own platelet-rich plasma injected into the scalp |
| How it works | Blocks the enzyme that turns testosterone into DHT | Concentrated growth factors applied to thinning follicles |
| FDA status | Approved for male pattern hair loss in men | Not FDA-approved as a hair loss treatment |
| Strongest evidence | Crown (vertex) and mid-scalp; not established for temple recession | Increased hair density in pattern loss; small, varied studies |
| Time to see results | At least 3 months; about 6 months for most | Usually a few months into treatment |
| Ongoing commitment | Daily, indefinitely | A starting series, then maintenance sessions |
| Main side effects | Lower libido, erection or ejaculation changes in a small share of men | Scalp soreness, swelling or bruising for a day or two |
| If you stop | Regrown hair is usually lost within a year | Benefit fades over months without maintenance |
How finasteride works
Male pattern hair loss is driven by dihydrotestosterone (DHT), which gradually shrinks genetically sensitive follicles until they make only fine, short hairs. The Propecia label describes finasteride as an inhibitor of the enzyme that converts testosterone to DHT. Its approval rests on trials in men with crown baldness, where hair counts rose at 6 and 12 months while men on placebo kept losing hair. The label also notes that its effect on receding temples has not been established.
The American Academy of Dermatology says finasteride slows further hair loss in about 80% to 90% of men who take it, with results showing at about 6 months. MedlinePlus adds that it can take at least 3 months to see improvement and that regrown hair is usually lost within 12 months of stopping. Our finasteride for hair loss page covers dosing and monitoring.
How PRP works
PRP starts with a small blood draw. The sample is spun to concentrate platelets, which carry growth factors, and the plasma is injected into thinning areas of the scalp after numbing. The aim is to nudge shrinking follicles into longer, thicker growth phases.
The research is promising but not definitive. A 2023 meta-analysis of 10 randomized trials found PRP increased hair density compared with controls, with a stronger effect in trials of men, but no clear change in hair thickness. The AAD notes that PRP can lessen hair loss within a few months, that it is not a permanent fix, and that a typical schedule is monthly sessions for three months, then maintenance every three to six months. PRP is not FDA-approved for hair loss, and its protocols vary from clinic to clinic.
Sexual side effects and other safety points
This is the question that drives most men toward PRP. In the Propecia trials, 3.8% of men on finasteride reported a sexual side effect, such as lower libido, erection problems or less ejaculate, compared with 2.1% on placebo. Most of these resolved, whether or not men stopped the drug. The label and the AAD also note reports of sexual side effects that continued after stopping, and the label lists depression and suicidal thoughts among postmarketing reports. Our answer on whether finasteride side effects are permanent looks at that evidence carefully.
Two practical points matter too. Finasteride lowers PSA readings, so anyone checking your prostate needs to know you take it; see PSA on finasteride. And women who are or may become pregnant should not handle broken or crushed tablets.
PRP’s risks are mostly local: soreness, swelling, bruising and, rarely, infection at the injection sites. Because it uses your own blood, allergic reactions to the plasma itself are not expected.
Using PRP alone or with finasteride
Men who want to avoid a daily pill can use PRP alone, accepting that it does not block DHT and that maintenance sessions are part of the deal. Topical minoxidil, which does not act on hormones, is another option many men add; our PRP versus minoxidil comparison covers that pairing.
Men who are comfortable with finasteride often add PRP to push density further, using the pill to slow the loss and PRP to thicken what remains. Our answer on PRP and finasteride together explains how that combination is usually set up.
How Ultimate Male plans your hair treatment
Hair restoration at Ultimate Male is PRP, offered at the San Gabriel and Downey clinics. Your provider looks at where and how fast you are losing hair, asks about medicines and blood thinners, and may suggest labs such as iron, thyroid or vitamin D when shedding seems out of pattern. If finasteride makes sense for you, the provider talks it through, including the sexual side effects and PSA point, rather than steering you away from it.
On cost, cosmetic treatments are generally not FSA or HSA eligible under IRS Publication 502, so plan on paying PRP for hair directly; financing through CareCredit, Prosper Healthcare Lending or Afterpay is available, and you get a quote before booking. Start on the hair restoration page.
