I am always amazed at the effect that certain events have on business both positive and negative. When no liquids were pronounced aboard airplanes, the duty free industry almost went under.  Now an article in Business 2.0 that says that the effect for the beauty industry has been devastating:

"The connection is airport shops where perfum and skin-care companies realize almost twice the profit margins that they get in department stores…Estee Lauder..brings in as much as 20 % of its profit from airport stores. Within two weeks [of the ban], Wall Street sliced Lauder’s share price by 10 percent."