Using technology from Israel’s Weizmann Institute, Israel’s TechCare has produced a cap that treats head lice. It is worn on the head and releases a natural material in gas form that kills lice and their eggs. The hat is designed for multiple use, as is the capsule containing the material.

http://www.globes.co.il/en/article-israeli-co-techcare-develops-hat-to-gas-lice-1001175308