I got Origin and Oni in the same shop and got excited. Am I allowed to refund part of the vp points if I used some of it? do i need to refund my skins first?

I mean, it's an obvious decision. They add a character who wears a mask during this global pandemic. There's got to be an official Riot Games Valorant face mask of Yoru's ultimate mask. I would totally buy one of them, and I want them so ba...