Henna brows are a sort of tinting that stains the skin, resulting in coloured hairs that can last up to 6 weeks and a tint on the skin that can last anywhere from 2 to 10 days. It's a great option to check out a shape before committing to semi-permanent cosmetics, or if you only want your brows shaped and filled for a short period. Henna has been used for thousands of years as a hair dye, body...