Well in my case it touchups going to be necessary sooner rather than later.So they put the last layer on last Tuesday and then on Saturday morning I fell hit my head against the bathroom wall and tore about a 7 inch gash in my scalp! After I got the bleeding to stop by drove myself to the ER. I got lucky because they were real busy usually they just staple it up like an old purse! But when I explain to the ER doc that I really cared about how my scalp look after this he agreed to use stitches instead of staples so that he could draw the torn bits of skin more tightly together and that way the scar will not be as wide. It took 13 stitches!