hennaHOLIDAYMAKERS are being urged against getting henna tattoos this summer.

UK doctors are warning everyone to avoid black henna, especially while travelling, after a 10-year-old British boy was kept in a Spanish hospital for 10 days following an allergic reaction.

The dye is a known contact allergen and can cause significant side effects like redness, blistering, itching, and discoloration of the skin.