When the hair over your scalp becomes thinned out and large areas of your scalp are visible, scalp tattooing or scalp micropigmentation is a great option to regain cover and make the scalp look less prominent.

This is a form of medical scalp tattooing, where a fine instrument is used to implant a dye into your scalp to make it look like a hair follicle. 

This works well for people with severe thinning who do not want to opt for a hair transplant, but want scalp camouflage.