Sweating is a constant problem for me too. There are a lot of products around to help reduce sweating, but not for the face I think. All I can suggest is trying a neck fan. As soon as you feel that heat surge put the fan on your neck and it may stop you from sweating, it usually works for me. Don't be embarrassed, more people are becoming aware of the difficulties of menopause and are sympathetic. An increase in oestrogen may help too, my levels are really low as well.