Hazrat Umme Salma (May Allah be pleased with her) narrates:

“In the life of Prophet Muhammed (peace be upon him), no injury or thorn piercing was treated on which Henna was not applied.”
(Tirmidi, Ahmad)

“Whenever somebody came to Prophet Muhammad (peace be upon him) with complaints of headache, he directed him to undergo cupping and whosoever complained of pain in legs, was advised to apply Henna.”
(Bukhari, Abu Dawood)