New York Tattoo License Practice Test

The answer concerning red pigments, particularly those containing mercury, is important because mercury-based compounds have a well-documented history of causing allergic reactions in some individuals. The chemical composition of these pigments can provoke sensitivities, leading to dermatological issues upon application. Allergic reactions can manifest as redness, itching, swelling, and even blistering at the site of the tattoo, causing concern among tattoo artists and clients regarding the safety of certain inks.

While the other color pigments can also lead to reactions, red pigments containing mercury are particularly noted for their association with allergic responses, making this choice the most significant in discussing potential risks in tattoo inks.