@We_love_yaoi because usually the thin skinned parts of our body collect more pigmentation due to which melanin also get collected there which results in darker skin colour than the body. Even high level of testosterone also cause this.
@We_love_yaoi because usually the thin skinned parts of our body collect more pigmentation due to which melanin also get collected there which results in darker skin colour than the body. Even high level of testosterone also cause this.