What Is That On Rihanna’s Face?

What is that watery milky white substance coating infidel pop star Rihanna’s face in the photo above?

Could it be that while doing volunteer work with sick orphan children Rihanna got her face sneezed on? Or did Rihanna let some rat weasel pimp rapper bust a nut on her after picking her up in some crappy club?

I’ll let you be the judge on which scenario is most likely.