my hat gives infinite charm

Describe the problem. Be as specific as possible!:
this is a cs hat i bought in fm I didnt wanted to use it till today... but I've equiped it when I bought... today i took it out from CS and I noticed it still had the charm exp... so I equiped it when I checked the item it still had the charm exp... so i reequiped... and yes it still has charm on it

 Images of problem

even when I have it equiped... it still has the charm message