List of Cosmo Prof Stores in Gaithersburg, MD Outlet Note Regular Brands Cosmo Prof Maryland Gaithersburg Rating 4.8 based on 94 votes Official Website http://www.cosmoprof.com/ Products Cosmetics NameAddressPhone Name/Address/Phone Cosmo Prof outlet - Gaithersburg 355 Muddy Branch Rd (240) 632-0133 People Also Viewed