Some inks used for tattooing may cause cancer and skin problems which can last for years, with red colour being the most lethal, according to a new report.
Red inks were described as the most dangerous, with blue, green, and black ink also coming under the scanner, the report by European Chemicals Agency (ECHA) said.
The toxic ink could cause skin problems which could last for years, as well as increasing the risk of cancer, 'the Sun' reported.
Other side effects could include serious allergic reactions to the ink and painful itching which can last for years, the report said.
"Many reports show concerns for public health stemming from the composition of inks used for tattooing," the agency said.
"The most severe concerns are allergies caused by the substances in the inks and possible carcinogenic, mutagenic or reproductive toxic effects," it said.
