"And also" isn't really redundant, either. It's true that "also" is often not truly needed, but it can serve to amplify or clarify our meaning. For instance, I might say "I want a sandwich, and also a bowl of ramen." Of course, the sentence works fine without the comma or the "also." However, that doesn't mean that we have a redundancy that must be removed. Certainly, "and" has to stay, since "also" can't work by itself, but we don't need to cut "also," either. Those extras are just a way of emphasizing that I want a whole additional thing beyond what we might expect. (Isn't a sandwich enough?)