ummm...i may not know what i'm talking about and let me know if i dont, but when i went to one of those MAC sessions at Nordstom in the spring the makeup artist said that you shouldnt use powerpoint pencils on your waterline. Forgot the reason but it had something to do with you could get an eye infection. She said use the kohls on the waterline as much as you want b/c they have some ingredient in them which are okay for the waterline.