I Made The World's First Self-Cooling Clothes

Why It Matters

If scalable and durable, this passive radiative-cooling material could cut building and personal cooling loads, lowering energy use and heat exposure without power consumption. That could shrink HVAC demand in hot climates and enable new low-energy wearable and roofing products.

Summary

A DIY scientist demonstrates a passive “cryopaint” that leverages radiative cooling through the atmospheric window to stay cooler than shade in direct sunlight without using energy. Field tests show painted panels reach far lower surface temperatures than white or black panels (about 83°F vs. 117°F and 175°F), and a small insulated-room test produced noticeably cooler perceived conditions under the painted roof despite only modest air-temperature differences. The presenter also paints clothing and records a significant personal cooling effect in 90°F conditions, confirmed by infrared imaging. The paint’s selective emission/absorption spectrum lets it send heat to the cold upper atmosphere while minimizing incoming solar heating.

Original Description

The paint I used in the video:

https://cryox.co/?srsltid=AfmBOopXe4jRQdqS2Ouq7P9IyXQtdE-d4ktQg0XolPAhr13OI1F-bDfS

Also here are some great videos by @Nighthawkinlight that go into more detail about these types of materials. https://youtube.com/playlist?list=PL1a2HkcVbmAWExiWT__qQypLEwkvijnIM&si=WljyHtAk_zC1wg4J