I look younger than I am because I have lived most of my life like a hermit hiding in my house.
So my skin has had very little damage/aging from the sun.
Looking like a ghost all my life has ended up having some benefit!::
....and I don't like swimming so no barnacles either!lol
I think we are meant to live in forests,shielded from the effects of direct sunlight.
I think early survivors got their vitamin C requirements from the sunlight filtering through tree leaves to create a healing green light ray.