It is a very complicated process which must be carried by specific hair replication tattoo expert rather than the regular tattoo artists because there are many significant differences in hair tattoo and regular tattoos. First of all the needles used for scalp micro pigmentation are different from regular needles. These needles are finer than the regular needles are well as their tip doesn’t have a perfect symmetric round shape as the hair follicles also possess irregular anatomy.
Apart from it the ink used for pigmentation is especially composed for the particular purpose and it is not similar to the ordinary tattoo ink. It is mandatory to use this particular ink because ordinary ink gives a little blue or gray shade along with time. If you are going for a hair tattoo then you must make all these things clear with the experts.
If you are going for it, you have to keep the same hairstyle in future, the same shaved-head hairstyle. Growing long hair and thinking about a hair implant won't be possible after acquiring a hair tattoo. You have to protect your head from sun as no matter which ink has been used, it has a tendency to fade. In essence you have to follow all the aftercare and precautions similar to a regular tattoo.