As the wife of Donald Trump, Melania has luxuries in spades. A private jet with real gold interior? Check. A spa in her apartment? Check. So why would she use any old skin care line when she could create her own -- and infuse it with caviar from the South of France?

While the textures and fragrances are nice enough, the caviar is a gimmick. There isn't much research to support anti-aging benefits.

Edible skin care is wrong on so many levels. But that was the premise of the now-defunct Jessica Simpson Dessert Beauty. Everything from lip gloss to body mousse was edible -- and tasted like sugary chemicals. Wonder why it was discontinued …