My friend's Rosacea is not totally gone but it is much improved. The last time I saw her, there were no red lines and her skin looked good(I do not remember it looking red).
She applies it daily on her skin and lets it dry. She pours a small amount of the whey into the palm of her hand and then topically applies it with her finger. She says that the culture keeps making new whey and as long as it does not get contaminated it keeps very well.
She also says that the whey works much better than the medicine that she was using before.
I will ask her for more details this week.
By the way, thank you for all of the helpful information that you provide on this forum. You are very encouraging and supportive.