The human body treats tattoo ink as a foreign substance. While the ink remains visible on the skin, tiny particles ... particularly those containing carbon black and azo pigments, can degrade ...

While 90% of those surveyed had black ink in their tattoos, only 25% reported a reaction. The authors of the study conclude that such reactions to tattoos are common. Testing the ink with a patch test ...

Board-certified dermatologists are the only physicians with advanced medical training to diagnose and treat skin, hair, and nail conditions. Learn more about dermatologists and the conditions we treat ...