Disappointed customer

Hi I'm so disappointed coz today I was told by a pharmacist at wynberg pharmacy that for kroko I can put nail polish on my healthy skin around my corn and that wouldn't cause my skin to burn off my toe but the opposite happened I did just that and not even a hour later when I removed the plaster because the skin around my toe was burning my skin was peeling off my toe I am so scared because I washed it twice and it's still burning.i am not happy with the lack of knowledge that pharmacist has at the store about products in the store. I usually don't go there often and this is the first time this happened but I think they should be more professional about their job.