Neiman Marcus is hosting a Fekkai hair event this Friday. Come try out the counter’s new hair analyzing device for free. (You’ll also get a complimentary sample with the consultation, if you make a purchase at the counter, you’ll get a free gift.) Now to the machine… It’s a handheld, wireless wand designed by Frederic Fekkai that is supposed to clue you in to the strengths and weaknesses of your hair. I don’t know exactly how it works, but I know that a computer screen will display the results of your test, which will include everything from root to tip. Recommendations about your hair’s needs and your styling wants will be made based on the exam. Friday, February 12 through Saturday, February 13, 12 pm to 6 pm. Neiman Marcus NorthPark. Cosmetics, Level One.