The Vibrosaun
This device hasn't held up in modern science, but it's pretty wild looking back at it. Within the Vibrosaun, heat, steam, and vibrations are distributed all over the participant's (victim's?) body. A fan then pushed cool air into the face of the person who was stuck inside. This didn't do anything, but it was pretty weird!
The Micrometer
This may look like a medieval torture device, but this was actually used by cosmetologists to help people determine what location on their face needs the most makeup attention. None of these nails had points on them, and nobody got hurt using this, that we know of.