Medium Brown Henna is the perfect color for people looking to enhance their natural shade of brown while adding shine and warmth to their hair. Using a specific ratio of the henna (Lawsonia inermis) and indigo (Indigofera tinctoria), MM offers the finest in chemical-free hair color. Morrocco Method Henna is 100% chemical free and contains no harsh metals, parabens, or toxins that irritate the hair and scalp. Each packet of henna contains enough for one application on shoulder length hair.