Skin Type & Color Retention in PMU
"My friend did it in the same color but why do I look dull?" I hear this worry so often in the consultation room. Even with the same pigment and the same artist, the result differs from person to person. Skin thickness and oiliness, and the underlying base tone (undertone) beneath the skin, change how color is chosen, settles, and how long it lasts. Let me explain, in plain skin terms, why CYAN designs anew for each person.
Color is made "inside the skin," not "on the skin"
First this. PMU color isn't painted on the skin's surface — it has to settle "inside" the skin. Skin is layered from the top: epidermis, dermis, subcutaneous fat. The top epidermis is a thin protective film with no blood vessels, a layer whose cells renew about every month (around 28 days). Below it, the dermis is a remarkable 15–40 times thicker than the epidermis, the real flesh where blood vessels, nerves, and collagen gather. PMU pigment looks best placed right at the boundary of these two — the very top of the dermis (the papillary layer). If it sits too shallow, only in the epidermis? The color drains away as the keratin renews each month. But going too deep out of greed makes the color smudge, or the deep color shows through the epidermis as blue-grey (this is called the Tyndall effect). So "was it placed at exactly the right depth" comes before "did you pick a pretty color." Color development and longevity start there.
Same color, but if your friend's is crisp and yours is dull
Let me voice the worry everyone holds inside once. "I clearly did it in the same color, so why do only mine look dark and muddy?" The answer is in skin type. There's the Fitzpatrick classification used in dermatology. It sorts skin from type 1 to 6 by melanin amount and sun response. Light skin with little melanin (types 1–2) reddens easily, while dark skin rich in melanin (types 4–6) doesn't tan easily but tends to leave pigment where it's stimulated. The literature also sees post-inflammatory pigmentation arising from type 3 on, and type 4 showing it almost always. But PMU is, in effect, "planned small injury" — the needle repeatedly pricking the epidermis-dermis boundary. So the darker the skin, the more your skin may add melanin after the procedure, settling darker or muddier than the color first intended. This is the first reason results split between people even with the same pigment.
True color development = pigment placed + my skin's undertone
Separate from skin brightness, beneath the skin lies a warm or cool base tone. This is the undertone. Three things create this tone. Hemoglobin (red, sometimes blue), carotene (yellow), and melanin (brown/black). So the final color you see in PMU is the result of "my skin's undertone" laid one layer over "the pigment I placed." Misread the undertone and it settles as a quite different color or looks discolored after the procedure. Think of it like a color corrector in makeup. You neutralize redness with green, and bruises or blue with apricot. PMU is the same. Using a cool grey brow color on skin with a red cast makes it read greyish, so for cool (blue-cast) skin we use an orange-based brown, and for warm skin a cool pigment with a yellow cast, to find balance. The principle is simple. A cool undertone is complemented with warm color, and a warm undertone is neutralized with cool color.
Oiliness and pores — even the same design differs in crispness
Skin type doesn't only divide color. Texture also splits the result. Oil glands are spread through the dermis. Oily, large-pored skin tends to let the line edges soften as the color settles. Fine lines are hard to keep crisp and tend to blur more over time. Conversely, dry, thin skin keeps color crisp but is sensitive to stimulation, so the depth has to go one step shallower. So even the same design uses the hand differently. For oily, large-pored skin, rather than packing lines tightly, we consider a technique that brings out texture with a tone deeper; for dry, thin skin we choose a soft color at a shallow depth. When the skin differs, the method used to reach the same result has to differ too.
CYAN looks at "the color that settles 1–2 years out," not "the color that's pretty today"
This part is so important I have to flag it. PMU isn't a procedure where the color right after stays as is. Pigment settles while passing through healing and fading, and during that time your skin's melanin and undertone keep working on the final color. So the color in the mirror on the day isn't the result — the color that remains in the skin 1–2 years out, after all the healing and fading, is the real result. So CYAN doesn't reach for a color that looks bright and pretty right now. We design in reverse — calculating skin type (brightness, oiliness, thickness), undertone, and which way the color will drift over time — so it stays the intended color even 1–2 years out. And honestly, since all these variables differ from person to person, the same pigment and the same design won't give everyone the same result. So instead of stamping out a fixed color chart, we read the skin in person in the consultation and recombine depth, technique, and pigment anew for that person's skin each time. Undertone can look different depending on lighting or your condition that day, so we cross-check several cues, and we go more conservative on dark or pigmentation-prone skin. A design for one person only — I believe this is the way to turn results that differ between people into the best possible result.
Three-line summary
1. PMU color has to settle at exactly the right depth "inside" the skin, and even the same pigment develops and lasts differently by skin thickness, oiliness, undertone, and melanin. 2. True color development is "pigment placed + my skin's undertone," so we balance cool tones with warm color and warm tones with cool color. We change technique and color by oiliness, pores, and skin thickness too. 3. So CYAN looks at the color that settles 1–2 years out, not the color that's pretty today, reading each person's skin in person and designing anew. Since photos alone can't promise it, deciding in person is, in the end, the right way.