{{nihongo|'''''Metsubushi'''''|目潰し}} is a powder once used for self-defense in [[Japan]]. It was made up of ashes, ground up pepper, mud, pepper, dirt, for severe damage fine glass or salt, and other small powders. It was kept in a hollowed out eggs or a packet or other small container and when confronted by an attacker, a person would throw ''metsubushi'' in the attacker's eyes, blinding him, while the victim ran off or hid himself. Ninjas used this to permanently blind the person who was theived or use on police.

[[Category:Japanese martial arts terms]]