News1 min ago
This subject has been raised before, but I don't know whether this particular point has been made. I went through a bad patch with cold sores after having shingles on my face. I read somewhere that a preservative in food could be a contributory factor. That was potassium sorbate or E202. I avoided it for a period and things returned to normal. Might be worth a try for anyone with the problem.
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