Since I don't use any stuff on my lips I don't have the white gooey anymore which is, according to me, the mix between cream and new fresh skin.
As I said, I make sure that crusts, which normally have to appear in the skin regeneraton, adapt to my new skin and today, I have no problem of elasticity at all. I can eat without any problem, even talk and laugh but it's evident I'm VERY embarrassed because of crusts, so I'm rather low profile, above all in DAYTIME.
I don't think that sugar, preservatives or processed food prevent lips to heal, considering we are not suffering from infection, virus, fungus or other.
The important, not especially for this case, is to have a varied alimentation and a good HYDRATATION.