Well since celebs do not appear on the red carpet or anywhere with cum on their faces, those pics would be fakes, which are not allowed. So, no.
If by "cum put on their faces" you mean "cum added in photoshop", and "like public" you mean that a cumfaced pic is photoshopped into a public background, those pics would be fakes, which are not allowed. So, no.
No matter how you ask these things, the answer is no. Pics that have been cummed on, or photoshop faked, are against the rules. The reasons why are mentioned in the forum rules, here: http://www.facialforum.net/showpost....61&postcount=1
If you are looking for real cum on real faces, that happen to be "in public", such as outside, or at the store or wherever...those do exist, and there is a subforum here (http://www.facialforum.net/forumdisplay.php?f=51) about that which you can look at, post, and request in. But legit pics like that are rare because of the danger involved in taking them.