Many of us know about henna's ability to add semi-permanent color to hands, arms and hair ... but this powerful powdered leaf also adds mega shine when used as a hair treatment rather than a dye. Hennaed's blend of gloss-boosting red henna, hydrating extra virgin olive oil and smoothing guar gum mixes with hot water to become a low-waste way to revive both natural and color-treated hair. All you need is a mug and 20 minutes and you'll be left with a gorgeous, glistening mane.