Check out this marcelwaver, a real game changer in hair fashion. Invented in 1882 by Marcel Gateau, this handy device used a heated rod and tongs to create the wavy bobs popular in the 1920s. Prior to the marcelwaver, women dampened their hair with either water or a waving lotion (think: perm chemicals), and with fingers and a comb created this classic look. A sleeker and lighter version of the marcelwaver is available today.
Fun fact: The hair-curling iron was patented by Sir Hiram Maxim in 1866. A prolific inventor, Sir Maxim held hundreds of patents including, the automatic machine gun, and automatic sprinkling system.
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