After application, especially after the first session, the skin may vomit at certain points and this ratio varies significantly from skin to skin.
Some are less, some are more.
For this reason, 2 sessions and 3 seanstas are both concentrated and overtaken, and the process is completed successfully.
Vomiting occurs less often after the first session because the immune system gets used to the pigments after the first session.
As a specialist we recommend that you apply a slight retouch after each year. This preserves both life and longevity and provides a lifetime extension of the retention period.
Hair Inn applications have a 3-year warranty for our customers. If customers do not interrupt their free finish every year, the permanence of the process will be 8-10 years.