So you are getting ready for a very important event. One that calls for your little black dress. You have taken great care to get ready BEFORE you put the dress on, to avoid getting the LBD dirty. However, you put it on and even though you were so careful you still get the dreaded antiperspirant white marks - AAAAGGGHHH!
Don't worry, take a pair of pantyhose and rub them over the mark and it will disappear. (I learned this tip from the man who actually invented pantyhose. He was my textiles teacher in college. You will hear about him periodically because I learned a TON from him.)
*Did you know that during the testing phase of pantyhose about 1,000 women were asked to wear them to work. By the end of the day the pantyhose had disintegrated while the women were wearing them. So back to the drawing board. If you don't succeed try, try again.