My point is that we don't know the long term effects HA paste has on bones. Maybe it is safe, but why use it if you don't have to? That is my thinking. I just think it is unnecessarily overused. If there is a medical reason to use it, for example hip replacement, go ahead and use it. If you're just talking about filling in tiny dimples on your chin when they don't even bother you that much, that doesn't make sense to me. I have a small cleft, it doesn't bother me, but it's your face do what you like.