Fashion trends change often, including hairstyles. In the 1930s, short hair was the preferred hairstyle among men and men's hair remained short until the 1960s. Many men had moustaches that were kept well-trimmed and thinned. Because of this trend in facial hair, many trips to the barber also included a shave with the haircut.
Short in the Back
Very short hair was the basis for men's 1930s hairstyles. Men visited the barber often, more often than in later years, to ensure that their hair did not get too long and cause people to stare. Hair was kept from touching the collar of a man's shirt or jacket. Once it touched the collar, it was definitely too long. The hair was cropped close around the ears and along the back of the neck.
Long on Top
Although men's 1930s hairstyles featured short hair on the back and sides of the head, the hair on the top of the head was left longer. This longer hair was then slicked back along the top of the head back away from the face. Men also typically wore hats when venturing outdoors. These hats were designed to hide all of a man's hair. Therefore, the long hair on top would still be short enough not to stick out of the hat.
Men in the 1930s typically wore their hair in a style that showed no part in the hair. While some did use a part to look different from the other men, most of the men combed their hair back away from their face to hide any part that may exist. This was likely a byproduct of the longer hair on the top. If a part had been used, the longer hair would have stuck out from the bottom of their hat, which was not in style at this time.
Among Latino men on the west coast, a hairstyle of their own emerged. They would keep their hair a bit longer and slick it back, all the way to their neck. This produced the look of a "tail" beneath their hats. This style was called the "Argentine ducktail."