The Hack: Sliced potato and olive oil to brighten dark spots.
Safety First: There's more benefit in the meat of the potato than the peel, but the peels do have mild bleaching agents that can help clear dark spots. Known for being rich in Vitamin C and having anti-inflammatory properties, potatoes can help brighten and de-puff skin. The concern here is in the application and removal process. The olive oil is critical in keeping the skin from essentially peeling off when removing. While this hack overall isn't totally risky, it's probably best to stick with a brightening sheet mask instead.