Who this guide is for
This guide is for men who have just had a PRP (platelet-rich plasma) session for thinning hair and want a clear plan for the next three days. If you have not had your first session yet, read what to expect at a PRP hair session first.
One honest note before the list: most PRP aftercare rules come from clinical experience rather than head-to-head trials. Researchers still disagree about the ideal number of sessions, let alone the ideal day for your first shampoo. The advice below reflects common practice and the evidence that does exist. If your written aftercare sheet from the clinic gives a different time or rule, follow the sheet.
Your 72-hour timeline
The first three days are about letting dozens of tiny injection points close and keeping the treated skin free of irritants, heat and anything that might interfere with the platelets you just had injected.
| When | Do | Don’t |
|---|---|---|
| Leaving the clinic | Go about your day; mild tightness is normal | Touch, rub or scratch the injected areas |
| First evening | Sleep on a clean pillowcase, head slightly raised if swollen | Use styling products, oils or hair sprays |
| Day 1 | Wash gently once your sheet says you can, in lukewarm water | Scrub, use hot water or massage the scalp hard |
| Day 2 | Walk and light activity are fine | Saunas, steam rooms, hot tubs or workouts that soak your scalp |
| Day 3 | Return to normal products if the scalp is calm | Hair dye, bleach, relaxers or perms |
| Whole period | Use acetaminophen if you need pain relief | Ibuprofen, naproxen or elective aspirin unless a doctor directs otherwise |
The do and don’t list, explained
The first hair wash. Leave the scalp alone for the period your sheet gives, then wash with a mild shampoo and lukewarm water, using fingertips rather than nails. Pat dry or let it air dry; skip a hot blow dryer on that first wash. Washing is not harmful once the injection points have sealed, and it helps prevent the small scabs from collecting debris.
No hair dye or chemical treatments. Coloring, bleaching, relaxing and perming all put strong chemicals on skin that has just been punctured many times. That raises the chance of stinging, irritation and a reaction. Hold off for the full 72 hours at a minimum, and longer if your sheet says so or the scalp still looks pink.
No saunas, hot tubs or heavy sweating. Heat widens blood vessels and can increase swelling, and sweat sitting on fresh injection points is an irritant. Hot tubs and pools also add bacteria and chemicals. A walk is fine; a hot yoga class or a long run in the San Gabriel Valley afternoon heat is better saved for later in the week.
Skip anti-inflammatory pain relievers. PRP relies on platelets releasing growth factors, and some anti-inflammatory drugs blunt that step. A 2024 review of PRP and NSAIDs found that ibuprofen and diclofenac suppressed platelet clumping for about 6 to 12 hours depending on dose, naproxen for at least 24 hours and possibly 48, and that acetaminophen (Tylenol), a weak inhibitor of the relevant enzyme, did not need a pause. The same review notes that formal deferral guidelines have not been established. For aftercare, that translates into a simple rule: use acetaminophen for soreness, as directed on the package and within your usual limits.
Do not stop a heart or clot medicine. If you take daily aspirin or a blood thinner for your heart, a stent, an irregular rhythm or a past clot, keep taking it. That decision belongs to the clinician who manages it, and it should have been discussed before your session.
Sleep and styling. A clean pillowcase reduces bacteria on the scalp. Skip gels, waxes and sprays until day three, and avoid tight caps or helmets on the first day.
Minoxidil. If you use it, restart on the day your provider gives you. Applying a solution with alcohol to freshly punctured skin can sting.
A checklist to keep on your phone
- Aftercare sheet saved, with the first-wash time circled
- Acetaminophen at home in case of soreness
- No dye, bleach or salon chemical appointment booked this week
- Gym, sauna and hot tub plans moved to day four or later
- Clean pillowcase on the bed tonight
- Heart or clot medicines continued as usual
- Next session date and photo reminder in the calendar
When the next session falls
PRP builds over a course, so the next appointment matters as much as the aftercare.
- At Ultimate Male, the hair restoration page describes a typical first course of three to four sessions spaced about a month apart, then maintenance every 12 to 18 months.
- The American Academy of Dermatology describes monthly sessions for the first three months, then one every three to six months, and notes that PRP is not permanent.
- A 2019 literature review proposed monthly sessions for three months followed by sessions every three months through the first year, while acknowledging that the ideal schedule is unknown.
Put the next date in your calendar before you leave the clinic, and set a reminder for your next progress photos. Expect little visible change during the first course; the clinic’s own timeline puts visible improvement at around four to six months. Our page on how long PRP takes for hair covers that timeline, and the hair loss treatment roadmap explains how to photograph progress so you can judge it fairly.
What is normal, and when to call
Normal in the first 72 hours:
- Mild redness or pinkness in the treated areas
- Tenderness when you touch or brush the scalp
- A tight or swollen feeling, sometimes drifting toward the forehead
- A dull headache on the first day
- Tiny scabs or specks of dried blood at injection points
- A few extra hairs in the drain; see shedding after PRP
What to watch for:
- Swelling that keeps increasing after day two, or spreads around the eyes
- One spot that becomes hot, throbbing, very red or produces pus
- Fever or chills
- Bruising that keeps growing
- Numbness or tingling that lasts beyond the day of treatment
When to call the clinic: any item on the watch list, bleeding that does not stop with ten minutes of gentle pressure, or pain that acetaminophen does not touch. Call 626-319-5261 during clinic hours, and say you recently had PRP.
When to call 911: trouble breathing, swelling of the lips, tongue or throat, chest pain, confusion, or fainting. These are rare after a scalp procedure and should never wait for a callback.
How Ultimate Male supports you between sessions
Ultimate Male’s hair restoration program at our San Gabriel and Downey clinics is built as a course, not a single appointment. You leave each session with written aftercare, the date of your next visit and a way to reach the clinic if something looks wrong. At each return visit, your provider checks how the scalp handled the last session, compares photos against your baseline and adjusts spacing if needed.
If you have questions between visits, whether about a scab, a headache or a vacation that clashes with your next date, call rather than guess. If you have not started yet, call for the free 10-minute phone call or book a hair restoration visit.
