Have you tried any hydrocortisone or corticosteroids? Both of these are used when treating Psoriasis and they bring down inflammation. I would highly recommend adding this to your aquaphor treatment because others on here have had success doing so. There are numerous causes for EC so if you can pinpoint what you think caused it then it will make your treatment and hopefully cure, that much easier. If your lips are trauma induced then I would treat it as if it were Psoriasis, which is what I'm currently doing. I'm using a vitamin d3 ointment called Calcipotriene, along with a steroid ointment called Desonide .005% and in between when my lips get a little dry I use Bepanthen wound healing ointment.

I think many more people have this condition from lip picking than we realize (although I realize that might not be the only cause). I was a lip picker but tried curing with other methods for a while. Now, I'm letting mine heal through leaving them alone and moisturizing with coconut oil. My thought is if your lips are this way because of picking them then it is only logical to let it grow back and repair itself.

You have very similar symptoms as me. I've tried everything topical under the sun. I've always been a lip biter/picker. But this problem didn't come up until a few months ago after a party hard summer.

If you want to use any steroid cream use it as directed though. Not for over a week or two because it can thin out lips or cause perioral dermatitis, which is what I got from using hydrocortisone too much. Honestly I would recommend leaving them alone try not to bite or anything and eat healthy with a multivitamin and maybe a B complex. If you have to put on anything use carmex or blistex but not anything petroleum based. Try this for a week and see if there's any improvement. If its not your diet then I'd try something someone else said.

In addition to the recommendations you've received, I would try taking L-Lysine capsules - at least 2,000mg a day. This can slow down the peeling cycle. I pasted this from another post on curezone:

"l-Lysine, an amino acid, provides nutritional support for the body's natural defenses. l-Lysine is particularly helpful in maintaining healthy gum and lip tissue.

Considerable research indicates that L-Lysine nutritionally influences Herpes simplex most effectively in conjunction with Vitamin C.
L-Lysine promotes the absorption of calcium from the digestive tract and it is involved in both bone development and the production of collagen.
It helps in the production of antibodies.
Lysine is utilized by many hormones and enzymes
Lysine is necessary for tissue repair

L-Lysine is a necessary building block for all protein in the body. L-Lysine plays a major role in calcium absorption; building muscle protein; recovering from surgery or sports injuries; and the body's production of hormones, enzymes, and antibodies."