Scalp micropigmentation (SMP) is a hair restoration procedure that works by administering pigments underneath the outer layer of skin, creating imitation hair follicles that conceal the problem of hair loss. The procedure doesn't guarantee new hair growth, but it offers a natural-looking result indistinguishable from a full head of hair. The degree of hair loss suffered matters, but the best scalp technician knows how to work on a scalp with thinning hair to restore the look of a full head of thick hair.