As I researched inventions of the 1920’s, I learned that before hair dryers were invented, women used the exhaust end of the vacuum cleaner to dry their hair. Hair dryers gave them another option. Check out this radio ad for a hair dryer in the 1920’s. Here are a couple of the out-takes: “Ladies, tired of drying your hair with the same old vacuum cleaner?” This proves the point. Women used vacuum cleaners as hairdryers. “With a speedy motor that will dry your hair in as littl