J.D.
My son did the same thing while he was teething, and he still does as he's cutting in his molers. My son is 16 months old. He would get it on his cheeks and chin, and also on his butt cheeks. My doc said it was exema or just really irritable dry skin. Well, he no longer gets the rashes on his face when he isn't teething. You can't help them stop salivating all over themselves or on anything else as the matter. If her face doesn't clear up within a week or so after cutting a tooth, and you know for sure she isn't starting another tooth coming in, then I would be alittle concerned with it, but if it's just from cutting a tooth, then I would say you have no worries. Hope this helps.