The word âhennaâ is understood by people around the world in many different ways. A majority of people probably associate it with the dark-red/brown dye for hair and skin that is traditionally used in many cultures but the name also applies to the flowering plant from which the dye is derived. Although most people associate hennaâs effect on the hair to dying its color it actually plays a number of roles in that part of our body too. Henna has been proven to increase the strength of the hair and therefore represents a safe dye that doesnât permanently affect the health of our follicles. Henna helps improve hair health. It helps seal the hair cuticle preventing breaking and increasing the shine and appearance of the hair. It also prevents dandruff.