We can predict that male-to-female and female-to-male transformations are going to be superpopular this Halloween. The hardest part of a guy-to-gal gender swap is the facial hair. An authentic beard is all in the application. Use a mascara wand to apply a longwear gel product like Make Up For Ever Aqua Brow ($22) in a stippling motion. Use two separate colors to make it look more like a five o'clock shadow.