Damage Skins can be found inside the Damage Skin Surprise Box,
which you can get them for 5 Donation Point or by dropping mobs.
How do I get the Damage Skin?
Just double click on the Damage Skin Surprise Box (located in the CASH inventory) and it will randomly give us a skin, which can be found in USE.
How do I activate the Damage Skin?
To activate them we must type the command @ds and it will show us a window where all our Damage Skins are stored.
To activate the one you want to activate, just click on it.