Read this in Hindi No festival or wedding is complete without applying henna on hands. Known to be auspicious for the bride during her wedding day mehndi (henna) has been used since ancient times for its far-reaching health benefits. Although widely used to colour hair and apply on hands mehndi can cause negative effects as well. Is henna really harmful? Dr Anil Ganjoo HOD Department of Dermatologist and Senior Consultant Saroj Super Speciality Hospital New Delhi says The pure form of mehndi (that is green in colour) doesn t cause any health complications except for some allergic reactions in sensitive