SMP pigment colour: why some turn blue or green, and how to avoid it

Well-done scalp micropigmentation (SMP) is meant to look like soft, dark-grey stubble or a gentle shadow under thinning hair. One of the most common complaints about poor SMP is that, months or years later, it looks blue, green or blurred, more like an old body tattoo than hair. Colour shift is one of the main reasons people seek correction or laser removal.

This guide explains why SMP can change colour, the role of depth, pigment and technique, how to lower the risk before you book, and what options exist if it has already happened. It is general information, not personal medical advice. If you are considering laser treatment or have a reaction in treated skin, see a doctor.

The short answer

• Blue tones usually come from pigment placed too deep, where light scattering through the skin makes black look bluish ¹.
• Green or other tones can appear as some pigments fade or when unsuitable or mixed inks are used.
• Blurring often goes with colour change: dots placed too deep or too densely can spread and merge ².
• Good SMP usually fades lighter rather than bluer, and touch-ups refresh it ³.
• Correction is sometimes possible, usually with laser lightening by a doctor followed by new work, but it may take several sessions and may not be complete ⁴.
• The best protection is choosing carefully: experience, suitable pigment and healed results that are years old.

How SMP is supposed to look

SMP places tiny dots of pigment in the upper layers of the skin. In shaved-head SMP, the dots imitate the look of hair follicles and short stubble. In density SMP, they reduce the contrast between hair and scalp. In both cases, the aim is a colour close to natural hair roots, usually a soft black, dark brown or grey, depending on your hair and skin ¹.

Because SMP is placed more superficially than a typical body tattoo, and with much smaller dots, it tends to fade over time. That is expected. The goal is that, as it fades, it becomes a lighter version of the same shade, which a touch-up can refresh. See how long SMP lasts.

Why SMP can look blue

Skin is not completely transparent. When pigment sits deeper in the dermis, light passing through the skin above it scatters, and shorter blue wavelengths are scattered back more than red ones. The result is that black pigment can look blue-grey or bluish. This is the same reason many old body tattoos and veins look blue under the skin.

Factors that may make blue tones more likely include:

• Needle depth too great, pushing pigment deeper than needed for scalp work.
• Body tattoo ink instead of pigment chosen for micropigmentation.
• Heavy, repeated passes over the same area, building up pigment.
• Using pure black when a softer or diluted shade would suit the skin better.
• Scalp skin differences, since scalp thickness varies between people and areas.

Why SMP can look green, purple or reddish

Pigments are mixtures of colourants. As pigment breaks down over time, through the body's normal clearance and sun exposure, different components may fade at different rates. If one part of a mixture fades faster, the remaining colour can shift, sometimes towards green, purple or brown. Lower-quality or unknown inks may be more likely to shift unpredictably. Asking what pigment is used, and whether it is intended for scalp micropigmentation, is reasonable before booking.

Blurring and "blowouts"

Blurring happens when dots spread under the skin, merging into each other. Instead of crisp, separate dots, the area looks like a patch or a smudge, which may also look blue. Common causes include:

• Depth too great or uneven, so pigment spreads in deeper skin layers.
• Dots too large or too close together.
• Too much pigment placed in a single session.
• Poor aftercare, such as picking at scabs or early heavy sweating, may contribute.

A published series on revision of unsatisfactory SMP outcomes describes problems such as discolouration, blurring, wrong hairline design and unnatural density, and the approaches used to correct them ². See SMP regrets for other common concerns.

Colour, depth and Malaysian skin

People in Malaysia have a range of skin tones. On lighter skin, black pigment may look stronger and more likely to show any blue shift. On darker skin, contrast with dark hair is usually lower, and the practitioner may adjust shade and density accordingly. Strong year-round sun can also speed fading, and uneven fading may make colour changes more visible. See SMP in hot, humid weather for sun protection after healing ⁵.

How to lower the risk before you book

It is also worth asking how the practitioner chooses a shade for your skin and hair colour, and what they would do if colour shifts later. See SMP sessions explained for how gradual building works.

Is it colour change or a skin reaction?

Most colour shifts are cosmetic. However, if treated skin becomes raised, lumpy, itchy, red or painful, especially months after treatment, it may be a skin reaction rather than simply colour. Tattoo pigments can occasionally cause allergic reactions, granulomas or other skin problems ⁶. These should be checked by a doctor, preferably a dermatologist, rather than covered with more pigment.

Options if your SMP has already changed colour

Wait and assess

If the work is recent, the colour may still settle. Fresh SMP often looks darker and sharper at first, then softens over weeks. A colour assessment is more reliable once the scalp has fully healed.

Correction by an experienced practitioner

If dots are mildly off in shade, or if the problem is uneven density rather than deep blue tones, a skilled practitioner may be able to adjust by adding new dots in a better shade. Adding more pigment over deep blue areas, however, may make things worse.

Laser lightening or removal

For blue, green or blurred SMP, laser treatment by a doctor is a common approach. Lasers break pigment into smaller particles that the body can clear gradually. Several sessions spaced weeks apart are often needed, and complete removal is not always possible ⁴. Side effects can include temporary redness, swelling, blistering and changes in skin colour. After lightening, SMP can often be redone more conservatively.

Accept and grow hair

Some people choose to let their hair grow longer to hide discoloured SMP, especially if laser is not suitable. This depends on how much hair is present.

How touch-ups affect colour over time

Touch-ups are a normal part of SMP, but they can either help or harm long-term colour. A good touch-up adds a light layer of pigment in the same shade, at the same shallow depth, to areas that have faded. Problems can build up when each touch-up adds pigment that is darker than needed, placed deeper, or packed more densely than the original work. Over several years, this can turn a soft result into a heavy, blurred patch.

Before a touch-up, it can help to:

• Look at the scalp in daylight with the practitioner and agree which areas have truly faded.
• Ask whether the same pigment and shade will be used as before.
• Keep photos from each stage, so changes are easier to compare.
• Avoid frequent top-ups just because the colour has softened slightly; some lightening is expected and natural.

If you change practitioners, share details of previous sessions, including dates and pigment if known.

Who should treat it?

Laser removal is a medical procedure and should be done by a doctor or under medical supervision, with an appropriate device for the pigment colour. Ask about the number of sessions expected, cost, side effects and the risk of skin colour changes, especially on darker skin. A dermatologist can also check whether there is any underlying skin reaction. See is SMP a tattoo for how SMP relates to other cosmetic tattooing.

Common mistakes

• Choosing on price alone without seeing healed results.
• Trusting fresh photos only, which cannot show colour shift.
• Asking for very dark, dense coverage in one session.
• Adding more pigment on top of blue areas instead of assessing removal.
• Ignoring lumps or itching in treated skin.
• Skipping sun protection after healing.

Questions to ask a doctor

• Is this colour change likely to be from depth, pigment or fading?
• Is there any sign of a skin reaction rather than just colour?
• Would laser lightening help, and how many sessions might be needed?
• What are the risks of laser on my skin tone?
• How long should I wait after laser before any new SMP?
• What should I look for in a practitioner to avoid this happening again? See SMP in Malaysia for general background.

The bottom line

SMP turns blue mainly when pigment sits too deep, and it can shift green or other tones when unsuitable or mixed inks fade unevenly. Blurring often comes with it. Choosing an experienced SMP practitioner, asking about pigment, seeing healed results that are years old and building density gradually all lower the risk. If colour has already changed, a doctor can assess whether laser lightening and careful redoing might help, and check that no skin reaction is involved. See SMP prices and SMP after a hair transplant for related topics.

Frequently asked questions

Why does some SMP turn blue?

Black pigment placed too deep in the skin can look bluish, because light scattered by the skin above it changes how the colour is seen. Using body tattoo ink or heavy, dense application can make this more likely.

Why does SMP look green?

Some pigments contain colour components that show through as they fade, and some lower-quality or mixed inks can shift towards green or other tones over time.

Does all SMP turn blue eventually?

No. Well-placed SMP using suitable pigment usually fades to a lighter grey rather than turning blue. Some lightening over the years is expected.

How can I reduce the risk of colour change?

Choose an experienced SMP practitioner, ask what pigment is used and whether it is made for scalp work, look at healed results that are several years old, and avoid practitioners who only show fresh photos.

Can blue or green SMP be fixed?

Sometimes. Options may include laser lightening by a doctor and then redoing the SMP, or careful correction work. Laser may need several sessions and may not remove everything.

Is blurring the same as colour change?

They often occur together. Pigment placed too deep or too dense can spread under the skin, making dots merge into a patch that may also look blue.

Does sun exposure change SMP colour?

Sun can fade pigment over time. Fading usually makes SMP lighter, but faded areas may look uneven, so sun protection after healing is sensible.

Should I see a doctor about discoloured SMP?

Yes, if you are considering laser removal, or if the area is raised, itchy or painful, since that may be a skin reaction rather than just colour.

Educational content. Not medical advice.