To make it short: The product shows the direction to correct, even if it seems to me that it will take longer than with other comparable products that I own. But what bothers me extremely, that the product stinks extremely Chemicals. Who knows what there are of plasticizers in it - so I could compass no longer than one day can turn. Good that I bought three of them :-( she would throw in my backpack and keep as a backup, but the watch band I will not make it.