After PRP hair treatment, you need to avoid anti-inflammatory medications, vigorous exercise, and direct contact with the injection sites for at least the first three days. The growth factors in your injected platelets need time to work undisturbed, and several common habits can interfere with that process. Here’s a detailed breakdown of what to skip and for how long.
Pain Relievers That Reduce PRP Effectiveness
This is the most important restriction and the one most people get wrong. Ibuprofen (Advil, Motrin), aspirin, and other common anti-inflammatory painkillers directly interfere with how platelets function. These drugs reduce platelet aggregation, which is the very mechanism PRP relies on to stimulate hair follicles. Taking ibuprofen for a post-treatment headache can genuinely undermine your results.
The restriction applies both before and after treatment. Most providers recommend stopping these medications several days before your appointment and continuing to avoid them afterward. Interestingly, not all anti-inflammatory drugs have the same effect. Newer formulations that selectively target a specific enzyme (COX-2) don’t appear to impair platelet function the way older, nonselective versions do. But unless your provider tells you otherwise, the safest approach is to avoid all over-the-counter anti-inflammatories and use acetaminophen (Tylenol) sparingly if you need pain relief, since it also has some potential to diminish PRP effects.
Hands Off Your Scalp for 3 Days
Resist the urge to touch, scratch, or rub the injection sites for at least 72 hours. Your scalp will likely feel tender, itchy, or slightly swollen, and that’s completely normal. Bruising, redness, and soreness can last two to five days. Touching the area introduces bacteria and can disrupt the healing process at the injection points.
During this same window, avoid wearing hats, headbands, or tight ponytails. Anything that puts pressure on or compresses the treated areas can irritate the scalp and interfere with the PRP settling into the tissue. If your scalp was treated broadly, try to avoid putting pressure on that area when you sleep as well. Sleeping on your back or using a travel pillow to keep weight off the treated zones can help during the first night or two.
How to Wash Your Hair Afterward
Don’t wash your hair or let direct shower pressure hit your scalp for the first 24 hours. After that initial day, you can wash your hair, but gently. For the full first 72 hours, use light pressure and avoid scrubbing. Skip harsh shampoos with strong fragrances or exfoliating ingredients during this period. The goal is to keep the scalp clean without mechanically disturbing the treated areas.
Exercise and Sweating
Skip the gym, running, cycling, and any workout intense enough to make you sweat for at least 24 to 48 hours. Some providers extend this to a full three days. Sweat irritates the micro-injection sites, introduces bacteria, and can reduce how well the PRP treatment works. Heavy exertion also raises blood pressure and increases blood flow to the scalp, which can worsen swelling and discomfort.
Light walking is generally fine. The restriction is specifically about anything strenuous enough to get your heart rate up significantly or produce noticeable sweating.
Alcohol and Smoking
Both alcohol and tobacco should be avoided for several days after treatment. Alcohol thins the blood and can increase bruising and swelling at the injection sites. It also impairs your body’s general healing response.
Smoking is particularly harmful to PRP outcomes. It compromises circulation throughout the body, including in the scalp, and impairs the healing process that PRP is designed to kickstart. If you smoke regularly, the long-term benefits of PRP treatment will be diminished regardless of aftercare. Quitting or at least abstaining for as long as possible around each treatment session gives the platelets the best chance of doing their job.
Sun, Heat, and Extreme Temperatures
Avoid prolonged sun exposure on your scalp for at least three days. UV radiation causes inflammation and can irritate the already-sensitive injection sites. Since you’re also supposed to avoid hats during this period, plan your treatment for a time when you won’t need to be outdoors for extended stretches, or use a loose, breathable head covering if absolutely necessary.
Saunas, steam rooms, hot tubs, and very hot showers should also be avoided for three days. Extreme heat dilates blood vessels and increases swelling. The same goes for extreme cold or rapid temperature swings. Swimming pools are off limits during this window too, since chlorine and bacteria in pool water can irritate or infect the injection sites.
Chemical Hair Treatments
Hold off on hair dye, bleach, chemical straightening, and perms for at least a week after PRP, and longer if your provider recommends it. These products contain harsh chemicals that can irritate the healing scalp, cause inflammation at injection sites, and potentially interfere with the biological processes PRP triggers in the hair follicles. Even “gentle” or “natural” dyes contain compounds that are best kept away from freshly treated skin.
Styling products like gels, sprays, and mousses should also be avoided for at least the first 72 hours. Once the injection sites have closed and any tenderness has resolved, you can gradually return to your normal routine.
Ice Packs and Cold Compresses
This one surprises most people. While your instinct after any injection might be to ice the area, cold compresses act as anti-inflammatories, and PRP actually needs some degree of the body’s natural inflammatory response to work. The controlled inflammation at the injection sites is part of what activates the growth factors. If swelling becomes uncomfortable enough to need intervention, ice can be applied briefly, but routine icing is generally discouraged.
What the First Week Looks Like
The first 24 hours are the most restrictive: no hair washing, no exercise, no touching, no heat exposure. From day two through day three, you can gently wash your hair but should still avoid hats, swimming, strenuous activity, and extreme temperatures. By the end of the first week, most restrictions lift and you can return to your normal routine, though alcohol, smoking, and chemical treatments are best avoided for as long as practical.
Most of the soreness and visible side effects resolve within five days. The actual hair growth results from PRP take much longer, typically becoming noticeable over three to six months as the treated follicles respond to the growth factors. Following these aftercare guidelines closely gives those follicles the strongest possible start.