I got the facial accessories bundle on the gem store. Just wondering why is it when I equip items it takes away things already there. Like when I equip earrings it takes way my characters beard. Why not let the items stack?
To be a little more clear, some items in different categories actually occupy the same "equip" slot. So Bosmer horns (at least on females) are actually facial hair. Skins and skin markings are actually the same layer as well. So one overwrites the other (in this case, full skins get priority).
There's some other stuff like this, but that's the general idea. If you're equipping one thing and losing something else, it's because they're both, actually, taking up the same customization slot, even if they're in different categories.
My advice? Bug report it when you find it. It might be intentional, but it could also be an accidental oversight.