It's hilarious that they say ominously "this is a medicine" and "you have to be home to sign for it", as if it's oxycontin or something that anyone other than the purchaser would use for nefarious ends. Must be some kind of EU health and safety regulation. This stuff is one of the most common ingredients around, in foods, in personal products. You can even cook with it, as a low-cal sweetener.
This might be a reference before your time, but when I use Glycerin, I think of the Bush (Gavin Rossdale) song "Glycerine" from my "slacker" days in the early/mid 90s - ha ha. Love the song. They weren't big in the UK but they were really big in the US (thus, Gwen Stefani).
Also -- Jas --
If you have it already, I don't think there is any reason why you need to wait to use the acidophilus. Especially if the acidophilus is touted as a cure for cheilitis, while my EO/washing/glycerin routine is a comforting, hygenic practice that is conducive to the body's healing, but is not a cure on its own, at least in my case.
You can do both at the same time.
I would suggest: Wake up, brush teeth, shower or whatever, wash lips with EO soap, put glycerin on lips and let dry, eat breakfast, take a swig of acidophilus liquid and swish around in mouth, swallow the liquid (good for the digestion), put a coating of acidophilus liquid on your lips (either with no glycerin, or with glycerin on top of the *dried* acidophilus if you want to counteract the apparent drying effect of the acidophilus), and leave the acidophilus on the lips for a few hours until you next eat.
Then, after lunch, wash with EO soap, put glycerin on, and repeat the soap/glycerin routine the rest of the day, whenever you eat something or brush your teeth again.
Or, you could just try the acidophilus on its own for a week, as Badlips recommends, and see how it goes. If acidophilus is going to be the cure for you, I'm sure that this will become clear within a week.
The EO soap is a lovely hand soap anyway, so your money on it wouldn't be wasted if you end up having healthy lips and don't need it anymore! :-)