CURLS! Some of us are born with them and some of us are not. There is hope for us not born with them … THE PERMANENT WAVE, also known as a “perm.”
The first attempt at creating curly hair was back in 1872. The beginning inventions involved thermal methods and no chemicals but that proved to degrade the hair. Another attempt was to wrap the hair in a spiral around rods connected to a machine with an electric heating device, then sodium hydroxide was applied and the hair was heated to 212 °F (100 °C) or more for an extended period of time.
The first attempts resulted in hair being burnt off and scalp burns.