Henna brows are a form of eyebrow tinting that is used to stain the skin beneath the brow hairs. The purpose of this is to cast a shadow or create an illusion of depth and fullness in the area, visually filling in any sparseness.
The results of henna brows typically last between 2-4 weeks, but it’s dependant on your skin type. If you have a dryer complexion, henna brows will tend to last a bit longer than they would on someone with an oily complexion.