Henna, the infamous plant that stems from an age-old tree through which its leaves produce a dye has been used for eons as a versatile beauty tool ranging from makeup to elaborate body art.
Two boys have been treated for chemical burns after having "black henna" tattoos on holiday. Nathaniel, 13, and seven-year-old Kane, from Ryhope, Sunderland, had the tattoos done on the last day ...