You can develop an allergy at any time. In medical terms, you are most at risk of an allergic reaction after around two to seven days. That’s because this is when the body is in contact with a highly concentrated form of the substance. If you already have an underlying sensitivity to it, your body will then react to the ink. Of course, it is also possible for you to develop a sensitivity over time and this could occur at any time.
If a customer already has an existing allergy to certain products (e.g. nickel), eczema could occur on the tattooed area and the surrounding skin, which can sometimes spread across the whole body.
If you experience an allergic reaction, please seek medical assistance immediately.