Like i've mentioned before I'm not fully certain what caused my healing. I was trying detox methods, supplements, etc(see my previous posts). I have wondered if toxicity is a cause; the immune system could be involved also. Like everyone here, I honestly cannot be sure. Maybe jsl's hospital stay might throw up something. During early march when leaving the lips alone I would leave the lips slightly open alright. Closing them when the crusts developed led to them becoming more saturated with moisture quicker than if I left them slightly open, thus becoming very soft and brittle. I don't know what you mean by 'passing through a chemicals period'. I stopped using toothpaste, washing products, etc, except natural shampoo once a week or less. I tried not wetting them during early march also. Now can wet them no problem, go swimming etc; no negative impact.