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 ...

Limit Sun Exposure: Avoid prolonged exposure of henna tattoos on the skin to sunlight, as this would result in faster fading of the tattoos. Sunscreen can be used to limit such reactions.