Cursed Wander Skin is an item which will change Wander's appearance after using it. The cursed skin is the same as what Wander has in the ending scene: Dirty clothes, pale skin, darker hair, and blue eyes (colossus eyes) will be his new appearance. Also, a pair of small horns and dark markings will appear on his head and his face. Besides that, this item will not give the player any extra ability; it is just a visual aesthetic.

Dormin says the following upon retrieving the item:

That is the 'Curse of the Colossus'... By using it, thou shalt resemble one in service of Dormin...