…i guess it is the same as on my Black Sea – and with my fingers touching it, i never had problems…
…a different story is the fingers of my children after they had ice-cream or chocolate (regularly!)…
…but even then a simple wipe with a dry cloth or a paper-towel with some glass-cleaner would do the trick…
…sorry, but as others pointed out already: this question cannot be meant and therefore not be answered seriously, can it?…i tried very hard to imagine you are really asking this question and meaning it…