In the literature, as well as legally, we distinguish between cosmetic and medical microneedling (please note the constantly changing local / cantonal guidelines).
In cosmetic microneedling, the top layer of the skin, the epidermis, is treated. The depth of the needles is very superficial and penetrates less than 0.5 mm into the skin.
This form of microneedling is supported with cocktails, which remain in the body for less than 30 days. These are topical, cosmetic cocktails.