how long do you leave henna on
2c/3a/M/iii. Re: How long do you leave your henna on? I leave it on between 2 and 5 hours, depending on how annoyed I get with the weight of it on my head, and how excited I get about what colour my hair will turn... Lady Amber, High Priestess of Viva Naturalis, in the order of The Long Haired Knights. Curly Girl Method!!