発毛メソセラピー（頭皮注入）: Downtime
Some of the products described on this page have not been approved as pharmaceuticals in Japan. They are imported personally under the responsibility of the treating physician, and they are not guaranteed to have the same efficacy and safety as domestically approved medications. In some cases, no approved medication with the same active ingredient exists in Japan. If a health problem occurs, it will not be covered by Japan's Relief System for Sufferers from Adverse Drug Reactions. Safety information from other countries differs from product to product. Before undergoing treatment, be sure to receive a thorough explanation from your doctor.
- Downtime at a glance
- Recovery timeline: treatment day to final result
- Common symptoms
- When can I do what? (Daily-life restrictions)
- Pain and anesthesia
- Tips for a smoother recovery
- Risks and side effects (the honest version)
- Spacing and combining with other procedures
- Who it may suit / who should be cautious
- Frequently asked questions
Downtime at a glance
Needle marks and redness typically last a few hours to a few days. They are easy to hide under the hair, and returning to work or going out is often said to be possible from the same day or the next day.
Typical downtime is A few hours to 2–3 days (if bruising occurs, it often fades within about 1–2 weeks), and most people feel comfortable being seen in public after Often possible from the same day to the next day (scalp redness and needle marks are easily hidden by the hair). How much swelling or bruising appears varies from person to person, depending on constitution and the extent of treatment.
Recovery timeline: treatment day to final result
Needle marks, redness, and stinging may appear at the injection sites. You will generally be advised not to wash your hair on the day of treatment, and showering is usually allowed as long as it stays from the neck down. It is safer to avoid alcohol, strenuous exercise, saunas, and other activities that strongly boost circulation. A hat can often be worn from the same day if it is clean, but follow your clinic's instructions.
For many people, redness and stinging start to fade at this stage. Hair washing can generally be resumed gently with lukewarm water (the timing varies by clinic). Work and outings are usually possible as normal, and the needle marks are said to be hidden by the hair and barely noticeable.
Redness and stinging have mostly settled for many people by this point. Mild itching can occur as part of the healing process — cool the area rather than scratching and watch how it goes. Exercise and saunas can generally be resumed gradually from around this time.
The needle marks are barely noticeable for most people. Any bruising also starts to fade around this time. Hair coloring and perms irritate the scalp, so it is safer to wait a little longer — about 1–2 weeks after treatment — until the redness has completely settled.
The scalp has usually returned to normal by this stage. Hair growth mesotherapy is generally done as a series of sessions every 2–4 weeks, and it is said to be too early to judge visible change at this point. Your doctor will adjust the timing of the next session based on the condition of your scalp.
After multiple sessions combined with ongoing oral and topical treatment, this is said to be the stage at which changes in hair shedding and the growth of fine new hairs are evaluated, often by comparing photographs. Because results vary greatly from person to person, whether to continue is decided together with your doctor based on your progress.
Bars show approximate swelling levels (individual results vary).
Common symptoms
| Symptom | Likelihood | When it appears | How long it lasts | Notes |
|---|---|---|---|---|
| Needle marks and pinpoint redness | High | Immediately after treatment | A few hours to 2–3 days | Redness may appear along the injection points, but it is often hidden by the hair and said to be hard to notice. |
| Slight oozing of blood | Medium | Immediately after treatment | Same day only | Because the scalp has a rich blood supply, a small amount of blood may ooze from the needle marks, but it is generally said to stop quickly with light pressure. |
| Pain and stinging | Medium | Immediately after treatment to the next day | A few hours to 2–3 days | A prickly sensation when the area is touched may linger, but in most cases it is said to settle within a few days. |
| Swelling and a feeling of scalp tightness | Medium | Immediately after treatment to the next day | A few hours to 2 days | In areas that received a larger injection volume, the scalp may temporarily feel tight. With injections near the hairline, swelling can occasionally drift down toward the forehead. |
| Itching | Low | The next day to a few days later | A few days | Mild itching can occur as part of the healing process. Scratching can prolong the redness, so manage it by cooling the area, and consult a medical institution if it is severe. |
| Bruising | Low | Same day to the next day | 1–2 weeks | Bruises are usually hidden by the hair, but if one appears in a visible spot such as the hairline, it can be covered with bangs or makeup. |
When can I do what? (Daily-life restrictions)
| Activity | Typically OK from | Key point |
|---|---|---|
| Hair washing | From the next day (gently, without rubbing) | You will generally be advised to skip washing on the day of treatment to avoid irritating the needle marks or introducing infection. Once you resume, it is safer to wash with the pads of your fingers rather than your nails, using lukewarm water. Some clinics allow washing from the evening of the treatment day. |
| Shower | From the same day (from the neck down, avoiding the scalp) | When you may wet your scalp varies by clinic, so follow the instructions of the medical institution where you were treated. |
| Bathing (soaking in the tub) | From the next day | A long soak on the day of treatment boosts circulation and can intensify redness and itching, so it is safer to avoid it. |
| Makeup and face washing | As usual from the same day | Because the treatment area is the scalp, facial makeup and face washing are generally said not to be restricted. If you had injections near the hairline, avoid rubbing that area. |
| Alcohol | From the next day | Drinking on the day of treatment may make redness and bruising more likely, so it is safer to avoid it. |
| Exercise | Light exercise from the next day; strenuous exercise from around 2–3 days later | Heavy sweat reaching the needle marks can cause irritation and itching. |
| Sauna and hot-stone baths | From around 2–3 days later | Heat and humidity boost circulation and can prolong redness, so it is safer to hold off for a few days. |
| Hair coloring and perms | From around 1–2 weeks later | The chemicals irritate the scalp, so it is safer to wait until the redness has completely settled. Confirm the timing with the medical institution where you were treated. |
| Hats and wigs | Often said to be fine from the same day | Choose something clean, and it is safer to avoid prolonged tightness or trapped humidity. |
| Scalp massage and topical hair-growth products | From around a few days to 1 week later (follow your doctor's instructions on when to resume topical products) | Avoid strong stimulation to the scalp until the needle marks have settled. If you are using a topical product, checking with your doctor in advance about when to pause and resume it will make things go smoothly. |
Pain and anesthesia
The typical pain level is Mild. Topical numbing cream or cooling may be used alongside the treatment. If you are worried about pain, consult your doctor in advance — including about which delivery method to use. The scalp is a sensitive area, so injections there are said to cause a noticeable pricking pain. Many clinics use cooling, vibration, ultra-fine needles, or topical numbing cream to reduce discomfort, and where a needle-free delivery device can be chosen (such as systems that use electrical currents to help the agents penetrate), pain is said to tend to be milder. How it feels varies from person to person.
Tips for a smoother recovery
- Avoiding alcohol, strenuous exercise, long baths, saunas, and other activities that strongly boost circulation on the day of treatment tends to make redness and bruising less likely.
- For a while after resuming hair washing, washing gently with lukewarm water — using the pads of your fingers rather than your nails — helps reduce irritation to the scalp.
- If you take blood-thinning medications or supplements, discussing the risk of bruising with your doctor in advance helps with managing that risk.
- If itching appears, cool the area rather than scratching — this is said to help keep the redness from dragging on. If intense itching, swelling, or pus persists, contact the medical institution where you were treated promptly.
Risks and side effects (the honest version)
- Results vary greatly from person to person, and some people may not notice any change. It has been pointed out that the evidence for hair mesotherapy on its own is not as well established as that for oral and topical AGA treatment, and it is generally offered as a supplementary option alongside those baseline therapies.
- Many of the agents used for injection — growth factor preparations, exosomes, injectable minoxidil formulations, and others — are medications and preparations that have not been approved in Japan. They are often handled through personal importation under the judgment and responsibility of the physician, and because they have not undergone the same review as approved medications, it is important to receive an explanation before treatment — and to understand it — covering their unapproved status, how they were obtained, whether an approved medication exists in Japan, and their side effects.
- In addition to redness at the needle marks, bleeding, bruising, pain, and itching, infection or allergic reactions can occur in rare cases. If you experience significant swelling, pus, or fever, contact the medical institution where you were treated promptly.
- Hair loss caused by alopecia areata, scalp skin conditions, or internal medical conditions is not what this treatment addresses — treating the underlying cause takes priority. Because identifying the cause of hair thinning (a diagnosis) must come first, do not start on your own judgment; see a physician for an examination.
- Maintaining results is generally assumed to require multiple ongoing sessions and combination with oral and topical treatment, so it is important to confirm the expected cost and time frame in advance.
- For those who are pregnant or breastfeeding, the medications that can be used are limited. Whether to have the treatment, and decisions about medication choices and the treatment plan, should always be discussed with a physician after an examination.
Spacing and combining with other procedures
If you have an important event such as a wedding or a photo shoot, allow for the possibility of redness or bruising and finish the treatment at least 1 week before the date. If injections along the hairline or part line are planned, build in extra leeway. A typical plan is said to involve multiple sessions at a pace of once every 2–4 weeks. Each session is performed after the scalp's redness and overall condition have settled, so your doctor will adjust the interval and number of sessions based on your progress.
| Combined procedure | Timing | Wait time | Reason |
|---|---|---|---|
| AGA Treatment (Oral and Topical Medication) | Same day OK | Combination is generally assumed | Mesotherapy is generally said to be performed in combination with baseline oral and topical treatment. The foundation is medications approved in Japan (such as oral finasteride and topical minoxidil) — noting that oral minoxidil is not approved in Japan — and the combination is decided under a doctor's diagnosis. |
| Hair Transplant Surgery | Wait required | Roughly 1 month before and after transplant surgery (your surgeon's instructions take priority) | It is common to avoid needle stimulation to the scalp immediately before and after transplant surgery. So as not to interfere with the period in which the transplanted hairs take root, follow your surgeon's judgment on when to pause and resume mesotherapy. |
| Scalp Microneedling (Dermapen-Type Devices) | Wait required | Roughly 1–2 weeks | Both treatments apply fine stimulation to the scalp, so having them too close together can intensify redness and stinging. Your doctor will adjust the order and interval. |
| Facial Injectables (Botox, Hyaluronic Acid Filler, etc.) | Same day OK | May be possible on the same day | Because the treatment areas differ — scalp versus face — these can often be done on the same day. Adjustments may be made depending on your condition and any anesthesia used, so if you would like both, mentioning it when you book will make things go smoothly. |
Who it may suit / who should be cautious
May suit you
- Those who have started to notice more shedding or a loss of hair volume
- Those who want to consider a direct approach to the scalp in addition to oral and topical AGA treatment
- Those who are still hesitant about surgery such as a hair transplant and want to start with scalpel-free options
- Those who want to address hair thinning while keeping downtime short
- Those who want to start by improving their scalp environment
Consider carefully
- Those who are pregnant or breastfeeding
- Those with alopecia areata, a scalp skin condition, or a scalp infection (treating the underlying cause takes priority)
- Those with a history of allergy to the agents being injected
- Those who are not comfortable with the explained risks of using medications unapproved in Japan
- Those with medical conditions or medications that lead their doctor to judge the treatment unsuitable