Yes. Temporary SMP may seem attractive for those who don't want to commit.Some temporary SMP pigments are encapsulated in microscopic silicone. As your body works to carry away the SMP pigments, this silicone has to go somewhere! Silicone is not readily excreted by the body....
Scalp Micro Pigmentation is similar to a tattoo. Like a tattoo SMP will fade over time. You may need a touch up years down the line. The interval between the touch up is dependent on the quality of the SMP pigment, the quality of work performed, and your exposure to UV light...
I have had several tattoo artist come to me for their SMP work. I am sure with training, a tattoo artist can do it. However, they would need the special instrument, needle, and pigment to make it work. Tattoo artist can't give you local anesthesia for a pain free experience.