If your hair was to turn grey later on in life, this would have no affect on your look after having Scalp Micropigmentation. Our pigments are specially formulated to settle into the scalp over time. This means that over the years, your SMP treatment will slowly become a lighter shade, whereas others may require a touch up to freshen or darken their SMP treatment, if your hair was to turn grey, you may never require a touch up session as you would simply allow the pigments to lighten naturally as your hair turns grey.