That is not apple cider vinegar. Apple cider vinegar from Costco comes in glass bottles, 3 tied up in a package. I just bought a set, it was 300 something NTD.
It is not the same thing as apple vinegar.
In Costco they also sell athlete’s foot cream, BTW.
I used apple cider vinegar with water for a few days, my foot’s smell is gone now. My skin didn’t peel off since I diluted vinegar in water (and my situation isn’t that bad).
Though it’s winter right now and my foot isn’t sweating, maybe it’ll be different during the humid summer days.