Someone’s now-grandmother wearing the style in the 1920s, Kansas City, Missouri
Quite a classic indeed. I like to wear it myself. The finger wave is accomplished with gel on wet hair, and, of course, the index finger, should you have one. It is best done on short hair, and it is strictly a ladies’ style, God forbid it be otherwise.
A most masterful finger wave
There exists a rather crass tutorial by a young Canadian lady, although I do say she gives a good lesson in the technique. A lady with longer hair can even wear this style; she’ll just need to pin it up in the back or set some elegant pin curls up.
Do wear it with class and composure, ladies, for it requires nothing less.