I saw less peeling after two weeks and complete healing after about a month and a half. I might see slight dryness on some days if I miss a dose. I take the yeast free Floradix brand two times per day (two teaspoons @ two times per day). Sometimes I take it with meals and sometimes inbetween meals. I think taking it between meals is better.
I was seeing my Dr. for fatigue and asked my ferritin to be tested. I had heard about iron deficiency causing dry/peeling lips and thought it might help but did not have high hopes when I started.