Which to try first
Start with minoxidil if you are early in your hair loss, comfortable with a twice-daily routine, and want the lowest-cost proven option. Start with PRP, or add it, if you know you will not keep up with daily application, if minoxidil irritates your scalp, or if you have used minoxidil for a year and want more density. Neither is a one-time fix: both slow loss and thicken thinning hair only while you keep them up. The strongest results in trials came from using the two together.
PRP and minoxidil side by side
| Topical minoxidil | PRP | |
|---|---|---|
| What it is | 5% foam or solution applied to the scalp | Your own platelet-rich plasma injected into thinning areas |
| Routine | Twice a day, every day | A starting series of sessions, then maintenance |
| FDA status | Approved, sold without a clinician’s order | Not FDA-approved for hair loss |
| First visible change | 2 to 4 months for some men; up to a year | A few months into the series |
| Early shedding | Some men notice extra shedding in the first weeks | Some men report a temporary shed |
| If you stop | Most new hair is lost within a few months | Benefit fades over months without maintenance |
| Common side effects | Scalp itch, dryness, flaking; unwanted facial hair | Soreness, swelling, small bruises for a day or two |
| Who should check first | Men with heart disease | Men on blood thinners or with bleeding disorders |
How each one works and what to expect
Minoxidil
Minoxidil was first a blood pressure pill. Applied to the scalp, it lengthens the growth phase of hair follicles and enlarges ones that have begun to shrink. The Men’s Rogaine foam Drug Facts say results may appear at 2 months, that some men need at least 4 months, and that continued use is needed to keep regrowth. The same label is for the top of the scalp only.
MedlinePlus puts the timeline at 4 months to a year and warns that most new hair is lost within a few months of stopping. The American Academy of Dermatology adds that the foam seems to cause less scalp irritation than the liquid. Many men also notice a temporary increase in shedding in the first weeks; it usually settles and is not a sign the treatment has failed. Our page on topical minoxidil covers application tips.
PRP
PRP begins with a blood draw from your arm. The sample is spun in a centrifuge to concentrate platelets, then the platelet-rich plasma is injected into thinning areas of the scalp after numbing. Platelets release growth factors that may help shrinking follicles produce thicker hair for longer.
The AAD describes a common schedule of monthly sessions for three months, then maintenance every three to six months, and notes that PRP is not a permanent solution. Results build gradually, which our page on how long PRP takes for hair explains. If you see extra hairs in the drain after a session, our answer on shedding after PRP covers what is normal.
What the head-to-head evidence shows
Direct comparisons are few, so researchers pool many small trials. A 2023 network meta-analysis of 27 trials ranked 5% minoxidil above PRP alone for raising hair density at 24 weeks, and ranked minoxidil plus PRP above minoxidil alone. A 2024 meta-analysis of six randomized trials found that PRP combined with minoxidil improved hair density, hair thickness and patient satisfaction more than either treatment on its own.
The takeaway is fairly consistent: minoxidil is the stronger single treatment on average, and adding PRP is where most of the extra benefit shows up. Study sizes were small and PRP methods varied, so individual results will differ.
What happens when you stop
Stopping is where the two feel different. With minoxidil, the follicles it was supporting fall back to their old cycle within months, so the hair gained tends to shed out in a fairly visible wave. With PRP, there is no daily drug to withdraw; the extra density simply fades more gradually as the effect of the last session wears off. In both cases you return to roughly where your genetics would have taken you, not to a worse starting point.
Why many men combine them
The two work through different routes. Minoxidil acts on the follicle every day; PRP delivers a concentrated burst of growth factors every few weeks or months. Using both covers more ground without adding another daily drug. Some men use minoxidil as the base and add PRP for a season of extra density, while others rely on PRP and use minoxidil only on the crown.
Neither treatment blocks DHT, the hormone that drives pattern hair loss. If you want to address that directly, our PRP versus finasteride comparison covers the pill that does. If twice-daily application is the obstacle, low-dose oral minoxidil is another route, explained in our oral versus topical minoxidil page.
Cost, effort and how Ultimate Male helps you decide
Topical minoxidil is inexpensive and sold over the counter, but its real cost is consistency for years. PRP costs more per session and requires clinic visits, though there is nothing to apply between them. Cosmetic hair treatments are generally not FSA or HSA eligible, so plan to pay directly; the PRP hair restoration cost page explains what affects the price, and financing is available through CareCredit, Prosper Healthcare Lending and Afterpay.
At the San Gabriel or Downey clinic, the provider looks at your pattern and pace of loss, your scalp, and any medicines that affect bleeding before recommending PRP. Shedding that seems unusual may prompt labs such as iron or thyroid. You can read what to expect at a PRP hair session before you book, and see the full service on our hair restoration page.
