British engineer and inventor Ruth Amos has entered the Guinness Book of Records again, this time by building the world's largest functional hair dryer.
The giant dryer is 1.7556 meters long and 1.6 meters high, and is built using industrial fans, heating elements and a large structure that mimics the shape of a hair dryer. The device is fully functional and is capable of drying real hair.
The project was created by Amos through her YouTube channel “Kids Invent Stuff,” which she runs with engineer Shawn Brown. The channel gives kids ages 4 to 11 the opportunity to pitch their inventions, while the most interesting ideas are built and tested in real life by the team.
The idea for the giant dryer was chosen after the children of the canal were challenged to propose an invention that could set a world record. After more than 5,000 proposals, the team chose the dryer design and began building it on an industrial scale. To realize it, large ventilation equipment, heating elements and special air duct parts were used.
This isn't the first unusual record set by Ruth Amos and her team. In 2024, they built the world's largest electric toothbrush, measuring 2,008 meters tall. It was also fully functional and made it into the Guinness Book of Records.
For Amos, the goal of these projects goes beyond setting records. Through “Kids Invent Stuff,” she and Brown aim to show that engineering can be creative and fun, encouraging children to engage with science, technology, engineering, and math.
The giant dryer is expected to be exhibited in the "Kids Invent Stuff" space in Gulliver's Valley, where it will also be used as part of educational activities to introduce the world of engineering to children.
