Allergic reactions to tattoo dye are rare. The various colors in a
tattoo are made from different materials. For example, the red color comes from
mercury, the green from chromium, the yellow from cadmium, and the blue from
cobalt. Allergic reactions to red dyes occur more often than allergic
reactions to other colors.
Allergies are an overreaction of the immune system. An allergic reaction can range from
mild and annoying to sudden and life-threatening. Allergic reactions do not
always occur the first time you are exposed to the dye. For example, if you
have had 3 or 4 tattoos without any problems, you could have an allergic
reaction to the dye the next time you have a tattoo. Each time you have a
tattoo, you must watch for signs of an allergy and get help based on the
severity of your reaction.
An allergic reaction can be local and produce swelling, itching, or hives in the area of contact with the allergen. Local reactions can usually be
handled at home and are not life-threatening. Hives can be minor, or they can
be the first sign of a life-threatening allergic reaction (anaphylaxis).
Sometimes a local allergic reaction can be the start of a more
serious whole-body reaction to the allergen. More serious reactions can include
swelling of the throat, wheezing, or problems breathing. Blood vessels can be
involved and cause a circulatory collapse (anaphylaxis).