Can i get banned for using Wooxy/Mapskins? (Custom Skins Made By Fans not Riot)

Im curious if i can get banned for using mapskins (wooxy) which is a program which allows you to download custom skins to the game and i played a few games with the skins i downloaded and someone told me i might get banned so i uninstalled it as quick as possible. {{champion:92}} {{item:2009}} please help,
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