the first group is well known by everyone and that is permanent makeup or emphasizing and highlighting facial features from the aesthetic cosmetic aspect.
The second group refers to the whole process of micropigmentation as a complementary process to surgical procedures and/or to the treatment of skin lesions such as vitiligo (a lack of pigment), nipple areola tattoo following breast reconstruction, scars etc.
The pigments or colors (inks) inserted into the skin are based on natural substances, especially minerals, and are approved by the Ministry of Health. They are very different from tattoo inks, which are inserted into the deepest layer of the dermis and are composed of larger heavier particles that include metals. Tattoo inks are comprised of the primary colors: blue, red, yellow and black. You cannot achieve color tones such as peach, pale yellow etc. by using tattoo inks, therefore making them unsuitable for highlighting facial features or even for blurring scars and they cannot be used as camouflage.
Permanent makeup can be applied by a cosmetician who underwent a course at a permanent makeup school, however, the current prevailing attitude is highlighting facial features, a method that endows them a fresh, youthful, lively look without a feeling of heavy makeup. Hence, it is highly advisable to contact a medical institute where the cosmetician (makeup artist) is skilled in repairing skin defects as well as in performing paramedical activities. Thus, before deciding to get permanent makeup, it is worthwhile to attend a meeting at the institute. Get an impression of the hygienic conditions, check whether disposable needles are being used and that the colors and inks are approved by the Ministry of Health. It is advisable to demand seeing other works performed by the makeup artist and you certainly may ask a facial makeup demonstration. See one side versus the other and check the color tones on the skin. All of this is attainable solely in a professional institute.