SMP requires three to four outpatient sessions that are performed with a gap of a week. Each session takes 3 to 4 hours relying on the area of the treatment, the style you want and some other factors too. To get a more realistic, natural and best result, the practitioner cautiously selects the color and density of the follicle and if the patient has some existing hair then he will make sure that the results blend with them correctly. By using the needles, the pigments are placed in the dermal layer of the scalp’s skin. The injected pigments look like natural hair.