PRP Hair Treatment Session: What Happens Step by Step
How is a PRP hair treatment session performed from start to finish?
You're not booking a mystery. A platelet-rich plasma session is a single outpatient visit built on one plain idea: your own blood comes out, gets concentrated, and goes back into the scalp where follicles are thinning. Knowing the six stages ahead of time is what turns an hour and a half in a chair from something intimidating into something you can judge for quality.
- Baseline capture: Photos under fixed lighting, sometimes a magnified look at follicle density, so progress is measured rather than remembered.
- The draw: Roughly 10 to 60 millilitres of venous blood into tubes holding sodium citrate or acid citrate dextrose.
- The spin: Commonly 1,500 to 3,500 revolutions per minute for five to fifteen minutes, stratifying red cells, buffy coat and plasma.
- Separation: The platelet-rich layer is drawn off, usually 3 to 8 millilitres at two to six times your baseline platelet count.
- Numbing: Topical anaesthetic for twenty to thirty minutes, sometimes with cooling air, vibration or a small ring block at the hairline.
- Injection: A 30 or 31 gauge needle placing 0.05 to 0.1 millilitre aliquots about a centimetre apart, a few millimetres deep, over ten to twenty minutes.
A platelet-rich plasma hair session runs six stages in one visit, from a 10 to 60 millilitre draw to thirty or more scalp injection points, and takes forty-five to ninety minutes from arrival to walking out.
What happens during the consultation and scalp assessment that precedes the first treatment?
Almost everything measurable about your result is settled before a single drop of plasma is drawn, which is why the first appointment should feel like a clinical examination and not a sales conversation. If nobody puts a dermatoscope on your scalp and nobody takes a photograph, you've got no way to tell in six months whether you're better or just hopeful.
- History screen: Shedding timeline, family pattern both sides, thyroid symptoms, crash dieting, and every current medication.
- Hard stops: Scalp infection, sepsis, platelet dysfunction or critically low platelet count, and haemodynamic instability.
- Dermatoscopy: Shaft diameter variation, vellus miniaturisation and yellow dots separate live follicles from scarred scalp.
- Fixed-angle photos: Same parting, same lighting, every visit, because three-month regrowth is too subtle to eyeball.
Plasma injections act on follicles that are miniaturising and do nothing on scarred scalp where the follicle is already gone, so an area that only looks thin is checked under magnification before it's included.
How should a person prepare in the days leading up to an appointment?
Here's the part most people get backwards: for this procedure the raw material is your own blood, so what you've put into your body that week shows up in the syringe. Preparation isn't box-ticking, it's the difference between a rich concentrate and a mediocre one.
- A week out: Talk to your prescriber about anything blood-thinning. Prescription anticoagulants are never paused on your own initiative, and that call may rule the session out.
- Two days out: Drop fish oil, high-dose vitamin E, ginkgo, garlic and turmeric extracts, and ease off alcohol since it dehydrates and thins the blood.
- Twenty-four to forty-eight hours out: Stop naproxen. Ibuprofen needs around eight hours, indomethacin twenty-four or less, and paracetamol needs no pause at all.
- The day before: Drink steadily. A well-hydrated vein is faster to find, quicker to draw and far less likely to leave you light-headed.
- The morning of: Eat normally but skip anything very fatty, arrive with clean dry hair, and leave off oils, styling product and dry shampoo.
The medication pause is the instruction that changes the product itself, at roughly eight hours for ibuprofen and twenty-four to forty-eight for naproxen, which has been shown to depress growth factor concentration for as long as a week.
How much blood is drawn and how is the draw itself carried out?
The number sounds alarming until you put it next to something familiar. Even the largest draw here is about a tenth of a standard blood donation, which is why healthy adults walk out feeling nothing worse than a small bruise on the arm.
A full frontal and vertex treatment draws 30 to 60 millilitres, and those tubes need to reach the centrifuge within a few minutes and certainly inside half an hour, because platelets begin degranulating while the sample sits.
How does spinning the sample separate the platelet-rich fraction from the rest of the blood?
Gravity does the sorting, the machine just makes gravity work harder. Blood components have different densities, so under sustained rotation they settle into bands, with platelets riding light at the plasma interface instead of sinking with the red cells. The choice your clinic makes at this step is why two places can call it the same treatment and hand you meaningfully different products.
| Criteria | Single soft spin | Double spin |
|---|---|---|
| Platelet concentration | 2 to 3 times baseline | 4 to 6 times baseline |
| Volume produced | Larger, more dilute | Smaller, richer |
| Handling | Fewer steps, less risk of early activation | More manipulation, more early-activation risk |
| Suits | Wide fields, simple workflow | Targeted fields wanting a higher dose |
Separation is governed by relative centrifugal force rather than revolutions per minute, and hair protocols typically run about 100 to 1,500 times gravity for five to fifteen minutes to land in the two to six times baseline range, since counts far above that can inhibit rather than stimulate.
What is done to the plasma in the minutes between the spin and the first injection?
This gap is quiet and it's where a good sample quietly gets ruined. Pull too greedily at the red cell line and you've diluted the concentrate and bought yourself a sorer scalp for nothing.
- Draw-off line: Stop just above the red cells; carryover dilutes platelets and adds post-injection soreness.
- Activation call: Calcium chloride, gluconate or thrombin, or none at all, letting the needle track activate platelets in place.
- Colour check: Straw yellow passes, pink means red cell carryover, milky means a fatty meal.
- Identity check: Labelled at separation and confirmed chairside, since two syringes of yellow fluid look identical.
Once separated, the plasma should go into the scalp within about fifteen to thirty minutes, because platelet viability and growth factor content decline with every minute the concentrate sits on the tray.
How is scalp discomfort managed while the injections are being placed?
Most people describe sharp stings with a pressure feeling as the fluid goes in, tolerable but not trivial. Comfort management isn't pampering here, it's what keeps a session from being cut short before the whole thinning zone gets covered.
A 30 or 31 gauge needle entered briskly and injected slowly hurts far less than a blunted needle used across dozens of punctures, which is why many clinicians change needles partway through a large field.
How are the injection points mapped and delivered across the treatment area?
Delivery is what separates a technically sound treatment from an expensive scalp massage. Three numbers govern the whole step, and if a clinic can't tell you theirs, you're paying for hope rather than a protocol.
- Spacing: Points about one centimetre apart, so diffusion halos overlap and no follicle sits in a gap.
- Depth: Three to five millimetres, level with the follicular bulge and dermal papilla.
- Aliquot: 0.05 to 0.1 millilitres per point, delivered with the needle held steady, not pushed.
- Coverage: Fifty to a hundred and fifty punctures across a full frontal and vertex field.
Too shallow and the plasma raises a bleb and runs back out of the puncture, too deep and it lands in subcutaneous fat below the follicle, so the target stays in the dermis at three to five millimetres.
How long does the whole appointment take from arrival to walking out the door?
Budget ninety minutes for your first visit and about an hour for the ones after. No sedation is involved, so you drive yourself home and go back to work the same day.
The anaesthetic cream, not the needles, is the longest single stage of the visit, which is why efficient clinics apply it first and run the draw and the spin while the scalp is numbing instead of working in sequence.
What happens to the scalp in the hours and days immediately after the injections?
Expect it to look worse before it looks like nothing happened at all. That pink, dotted, slightly puffy scalp on the first evening is the procedure working, not a warning sign.
- First few hours: Pink, mildly swollen and tender, with visible pinpoint marks and sometimes small beads of dried blood.
- First evening: A dull headache or a tight band across the forehead is common and usually settles overnight.
- Next morning: Swelling can track down to the forehead or around the eyes after frontal work, clearing in a day or two.
- The following few days: Wash gently with lukewarm water and mild shampoo, and hold off on colouring, hot tools, saunas, pools and hard exercise.
- Weeks three to six: A short-lived increase in shedding is normal as follicles get pushed out of the resting phase.
Ibuprofen and similar anti-inflammatories are avoided for several days afterwards because the entire mechanism depends on a controlled inflammatory and repair cascade at the follicle, with paracetamol the recommended alternative if you need something.
What can go wrong during or straight after a session, and how is it handled?
Serious complications are uncommon for a reason worth stating plainly: the material injected is your own, so there's no foreign protein to react against and no rejection risk. What's left are the ordinary risks of any needle procedure, and most of them are prevented rather than treated.
Spreading redness with warmth, pus, fever, pain that increases rather than fades over the days after a session, or any area of numbness that doesn't resolve are reasons to call the clinic rather than wait it out.
How many sessions make up a full course and how far apart are they spaced?
One session is a dose, not a treatment. Follicles cycle through growth, transition and resting phases over months, so clustered sessions catch a far larger share of them at a receptive point than any single injection could.
| Criteria | Induction course | Maintenance |
|---|---|---|
| Sessions | 3 to 4, up to 6 for advanced thinning | Ongoing single sessions |
| Interval | Every 4 to 6 weeks | Every 3 to 6 months |
| Purpose | Catch more follicles in a receptive phase | Hold the gains you've made |
| Judged by | Baseline photos and density measures | Compared against baseline at six months |
The treatment is suppressive rather than curative because it doesn't alter the androgen sensitivity driving pattern hair loss, and results six to twelve months after a final session range from held gains to a drift back toward the starting point.
Who is qualified to perform the procedure and in what kind of setting?
Venepuncture, handling of human blood and injection into the dermis put this squarely in the medical category rather than the beauty one. That single fact decides who's allowed to hold the syringe and what the room around you has to have in it.
- Who injects: A doctor, or a registered nurse or similarly regulated practitioner under medical delegation and supervision.
- The room: Reclining chair, calibrated centrifuge, sharps disposal, clinical waste handling and hand hygiene facilities.
- Emergency readiness: The ability to manage a faint and an anaphylactic reaction to a topical agent.
- Records per session: Kit lot number, volume drawn, protocol used, area treated and any adverse event.
Minimally manipulated autologous blood used within the same procedural session is generally treated as a medical procedure rather than a licensed medicinal product, which puts the burden on practitioner registration and premises standards instead of drug approval.
