Can someone lose the ability to tan permanently after long periods without sunlight?

-Can someone lose the ability to tan permanently after long periods without sunlight?

The text i wrote:  "The number of functional melanocytes (the cells that produce melanin) decreases with age. melanocytes situated on sun exposed areas of your body produce more efficiently melanin over the time. Areas that are less often sun exposed lack this training effect so they will tan slower and get more DNA damage after sun exposure.
Inside the melanocytes there are melanosomes, in the melanosomes tyrosine is transformed into melanin. Melanosomes then are transported to the keratinocytes (Outer layer skin), there melanosomes will protect the cell nucleus, using the melanin to absorb the ultraviolet from the sun, reducing the amount that reach the dna inside the nucleus. "

I hope this is right but i still dont know the proper answer to the question. Can someone that tanned easily lose this ability? And this question also made me curious about a topic: Do we have sufficient evidence that this tan ability can be genetic? Because i never saw a pale surfist.