Is Mod Skin LOL Pro 2017 Legally to Use?

Download Mod Skin LOL Pro 2017 | League Skin
This is a Mod Skin free program name LOL PRO (LOL SKIN) . Program helps you change Champion Skin in the game League of Legends is easy and fast.
Is this mod Legal to use in League Of Legends MatchMaking? This app is changing your in-game skin to custom ones wich only you can see. I can use this and not gat Banned? {{sticker:zombie-brand-mindblown}}
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