Whilst scalp micro pigmentation is a permanent treatment, it can be removed with a correctional procedure or laser treatment.[4] Since the procedure is relatively new, there is not much, if any scientific data on whether people have suffered side effects. Due to the two main health concerns with hair tattoos being the cleanliness of needles and the possibility of an allergic reaction to the ink used, many practitioners of the procedure perform a small patch test on an inconspicuous part of your scalp before performing the full treatment. Finding a natural looking hairline is the most crucial aspect of scalp micro pigmentation. If this procedure is not done properly, it can, in some cases, totally prevent the illusion of hair and leave the client with an un-natural finish.