Route · Injection

Scalp micropigmentation: it is not a way to grow hair — so the questions to ask are different

This is a tattoo. Pigment is deposited in the scalp to create the look of closely shaved hair. No hair grows. So this page has no efficacy badge, and what has to be asked is not 'does it work' but 'does the colour shift, does it fade, can it be undone'. What we opened are technique reports and case series, not randomised trials.

Last checked Oct 2, 2026

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What it is: Pigment is deposited in the scalp to create the look of closely shaved hair. It is a tattoo.
What it is used for: To reduce the contrast where hair loss makes the scalp look bare.
How it is said to work: It does not add hair; it narrows the colour difference between scalp and hair so the area looks less bare.

There are no numbers and no citations in this box. What has been established, and how far, is below.

At a glance

Session length: 120–240 min
Pain: Moderate
Downtime: 2–5 days
Sessions: 2–4 sessionsColour is built over several sessions. And touch-ups years later are separate — we found no material putting a number on those.
How long it lasts: Not applicable
Relative cost: Higher
How well established: Not established

“Reported in a trial” means a number a study on this page actually reported. “Typical range” is not a measured value but roughly how it is usually done, and it varies by clinic and by person.

Cost is not an amount but a band: where this procedure falls when the ones on this site are lined up per session, or per area treated. Real prices differ several-fold by clinic and by how much is treated, so they are not given here. Surgery is measured on a different scale and cannot be compared with this band.

This is not how large the effect is but how well confirmed it is. It shows the highest grade among the findings on this page.

Korean classification Being checkedThe regulatory class has not yet been confirmed against a primary document. It will be filled in once it is.

Scalp micropigmentation deposits pigment in the scalp to create the look of closely shaved hair.

This page has no efficacy badge. But the reason differs from the other badge-less pages on this site.

biotin — because there are no trials at all
liquid silicone injection — because what we opened was all complication reports
this page — because the axis of efficacy is different to begin with

This is not a way to grow hair. Minoxidil, finasteride and hair transplant try to change the number of hairs, and this site's badges point at trials that counted them.

Scalp micropigmentation adds colour. An area looks bare because the light scalp contrasts with dark hair, and narrowing that contrast makes it look less bare. The hair is unchanged.

So the question 'does it work' means almost nothing here. Add colour and colour is there. A photograph taken right after will look different, almost by definition.

The questions to ask are other ones.

does the colour shift — tattoo pigments are known to change hue over time
does it fade — the scalp gets a lot of sun
can it be undone — removing a tattoo is harder than putting one in
does it look wrong if you grow your hair — it is placed on the premise of a close shave
what happens as the hair loss progresses — hair loss tends to progress

We found no randomised trial on any of those five. That fact is the content of this page.

This site does not deal in prices, clinics or reviews.

What is established

Not established

There are no randomised trials, and what we opened are technique reports and cases

First, why this entry has no badge.

Grades on this site point at trials we have opened and read ourselves. We attach one when the numbers, the duration, the control and who scored can be checked. For this procedure we found no such trial.

What we opened is a 2017 technique standardisation report in J Cutan Aesthet Surg and a 2021 introduction to the procedure in J Craniofac Surg. Neither is a randomised controlled trial.

And the most important thing in this entry is the nature of that gap.

Designing a randomised controlled trial for this procedure is very hard. Consider — can there be a sham scalp tattoo? You cannot make it look done without depositing colour. The person who had it knows. A rater looking at a photograph knows. And a design that leaves the other side untouched, as on endermologie or nitrogen plasma, is hard to use on a head.

So this site writes it this way — the evidence gap here is less 'nobody measured it' than 'what needs measuring is something else'.

Whether the colour went in does not need measuring; you can see it. What needs measuring is what happens later.

how the hue has shifted at one, three and five years
how much it has faded
how many touch-ups it comes to
how much comes out if you try to remove it
how it looks once the hair loss has progressed

We could not open material that followed those five systematically. And those are the questions that actually matter for this procedure.

That is why this site made this page. An empty badge is itself information — a permanent decision is being made, and there is no material on the permanence.

Finally, this is not a put-down of the procedure. Narrowing the contrast does make a visible change. And it is the option left to someone for whom the hair-growing routes do not work. This site does not argue against that choice. It only states precisely what the thing is — this is not a treatment but a tattoo.

So it sits at 'not established'.

Known risks

The hue can shift. Tattoo pigments are known to change colour over time. On the scalp, turning bluish or reddish is discussed. We found no material putting a frequency on it.
It fades. The scalp gets a lot of sun. This is a procedure premised on touch-ups. Ask in advance how often.
It is hard to remove. Tattoo removal is harder than application, and using a pigment laser among hair can act on the pigment of the surrounding hair too. Ask before, how far it can be undone.
Dots can spread or enlarge. If pigment diffuses over time, dots can merge and read as a patch. The depth of deposit decides that.
It is placed on the premise of a close shave. If you plan to grow your hair, say that first.
Hair loss progresses. What was placed to match today's hairline can fall out of step with the hairline of a few years' time. Discuss in a consultation whether to use minoxidil or finasteride alongside, and in what order.
Infection and allergic reaction are possible. Pigment goes into the skin.
If your scars tend to keloid, say so in advance.
Effects on magnetic resonance imaging have been reported for tattoos in general. When you have a scan, say that you have a tattoo.
Ask what is being put in. Get the pigment's composition and product name. You will need it if a reaction appears or you try to remove it.

What is not established

We found no randomised controlled trial. And a sham-controlled design is very hard for this procedure.
The frequency and direction of hue change we found no material putting numbers on. It is one of the things one most wants to know here.
How much it fades after some years is not followed in any material we could carry.
How many touch-ups it comes to on average is unverified.
What happens when removal is attempted we found no material on.
How it looks after the hair loss has progressed has no long-term material.
A comparison with doing it alongside a hair transplant we did not find. The two are discussed together, and there is nothing to compare them with.
Pigment composition differs between practitioners. Nothing separates which pigment changes how.
We have not yet opened the primary Korean regulatory classification, so it stays 'being verified'. And who may perform this, and where, differs between countries.

Whether to have it done is a decision to make with a doctor.

What this article relies on

PubMed — 미국 국립의학도서관 문헌 데이터베이스National Library of Medicine · Checked on 2026-09-16