This one closes the trio of freaky videos from my growing up years.
Video description taken from Wikipedia:
The video features the band playing in an oven-chamber, monitored by a scientist in a control room. Their sweat is collected, received by a doctor and taken to a wrinkled-up woman in an adjoining room. The doctor touches part of her flesh with the sweat, and it smoothens. The doctor injects a large amount of sweat into the woman, and she regresses to being middle-aged. The doctor calls for more sweat, so the scientist turns up the heat, as high as 175°F in the oven-chamber, causing the band members to sweat even more. Their sweat drains into a sort of water cooler, where the doctor collects a glass of it. She gives this to the woman, and when she drinks it, her youth returns. However, she is still not satisfied, so she orders and drinks another dose and turns into an alien mutant. She loves the new look and pays the doctor. When this is all done, the heat lamps are turned off, and the room now seems to appear very cold. The band punch out their time cards and walk out.