Body painting is a form of body art where artwork is painted directly onto the human skin. Unlike tattoos and other forms of body art, body painting is temporary, lasting several hours or sometimes up to a few weeks (in the case of mehndi or "henna tattoos" about two weeks). Body painting that is limited to the face is known as "face painting". Body painting is also referred to as (a form of) "temporary tattoo". Large scale or full-body painting is more commonly referred to as body painting, while smaller or more detailed work can sometimes be referred to as temporary tattoos. Indigenous Body painting with a grey or white paint made from natural pigments including clay, chalk, ash and cattle dung is traditional in many tribal cultures. Often worn during cultural ceremonies, it is believed to assist with the moderation of body heat and the use of striped patterns may reduce the incidence of biting insects. It still survives in this ancient form among Indigenous Australians and in parts of Africa and Southeast Asia, as well as in New Zealand and the Pacific islands. A semi-permanent form of body painting known as Mehndi, using dyes made of henna leaves (hence also known rather erroneously as "henna tattoo"), is practiced in India, especially on brides. Since the late 1990s, Mehndi has become popular amongst young women in the Western world. Many indigenous peoples of Central and South America paint jagua tattoos, or designs with Genipa americana juice on their bodies. Indigenous peoples of South America traditionally use annatto, huito, or wet charcoal to decorate their faces and bodies. Huito is semi-permanent, and it generally takes weeks for this black dye to fade. Western Body painting is not always large pieces on fully nude bodies, but can involve smaller pieces on displayed areas of otherwise clothed bodies. There has been a revival of body painting in Western society since the 1960s, in part prompted by the liberalization of social mores regarding nudity and often comes in sensationalist or exhibitionist forms. Even today there is a constant debate about the legitimacy of body painting as an art form. The current modern revival could be said to date back to the 1933 World's Fair in Chicago when Max Factor Sr. and his model Sally Rand were arrested for causing a public disturbance when he body-painted her with his new make-up formulated for Hollywood