At the time I got my EC I was stressed to f*** and also taking loads of supplements which maybe my body couldn't handle.
One of the supplements I was taking (Although I can't remember which one as this was more than two years ago now) was listed on the Candida page as potentially helping Candida to enter the bloodstream.
There's loads of studies where Candida has been seen to be present in EC affected lips. Whether its because the plaques allow Candida to develop I don't know.
But #92305 has had success with these creams and he too was taking similar supplements to me when his EC developed so I think it's definately worth a shot...