when skin in those areas experience a lot of friction or irritation, it can produce more melanin, which is the pigment that gives the skin its color(c" ತ,_ತ) hope this helped
when skin in those areas experience a lot of friction or irritation, it can produce more melanin, which is the pigment that gives the skin its color(c" ತ,_ತ) hope this helped uwamusume
so if there’s a lot of friction, it can lead to the darkening of skin,, and it’s clear between those two they do it very often(๑>◡<๑)
i get it when your hole is stretched out it’ll flatten out to a tan colour but why is it so brown? but also why is the tops dick so brown i’m so lost