Many of the masters of permanent makeup mistakenly believe that easy penetration and good color residues in the skin are the property of modern PMU pigments/dyes. But such paint qualities are provided not by pigments, but by binding substances and Surface Active Agents (SAAs), which are part of the liquid base.
SAAs reduce surface tension between substances that do not dissolve in each other. Simply put, they bind liquid (water) with fats, liquid with solid particles, etc. (water with glycerin, alcohol, dye).
Such paint PMU have the properties of hydrophilic (from Dr.-Greek. δωρ «water» + φιλία «love») —that is, water-loving. SAAs contribute to the even distribution of PMU pigment not only in the liquid of the paint, but also in the skin, attracting it to the water in the cell and intercellular space.
But in the absence of SAAs, the process of micropigmentation will be longer and more difficult, because the paint does not interact with the water molecule, literally pushing away from the fluid in the skin (remember how difficult it is to wash off the fatty pad in water, and how everything changes with the addition of a dishwasher which has in the composition of SAAs)
Similarly, the binding agent Polyvinylpirolidone (PVP) ensures the adhesion of all the components of the PMU paint to each other, forming a thin shiny film. Examples of use: in pharmacology as an adsorbent, in the manufacture of pills or in hair styling products (as a glue component).
You can check any pigment for permanent makeup for the presence in it SAAs to find out if it will lay in the skin easily
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