|Pop. Mech. April 1929 [big version here]|
Use the 1920s miracle hair-growth technique, Dermo-Ray. to grow a new crop of hair, and not only will you have a new look - you'll be able to see and interact with your former bald self.
You will, however, have to use "the electric magic of infra-red rays" on your head. So you will need electricity in your home. You know, so that you can plug your scalp in and heat it up with infra-red rays. Apparently this was discovered by a nameless surgeon. How did he find this out? By chance, or was he cooking his scalp? I do not really want to know, but it is rather mysterious.
|Popular Mechanics, July 1928|
*Where else? Of course this place is in Chicago - because back in the early 20th century Chicago was the (unofficial) world capital of all sorts of astonishing novelties and inventions. Just click that tag "Retro Chicago" if you want to be totally amazed and entertained by more of them.