Why should artists avoid tattooing over scars?

Tattooing over scars can lead to unpredictable healing and additional skin issues due to the difference in skin texture and sensitivity in scar tissue compared to surrounding healthy skin. Scar tissue often has a different structure and may not respond to tattoo ink in the same way that normal skin does. This can result in uneven ink absorption or fading, leading to an undesirable outcome. Moreover, the tattooing process on scarred areas may cause more discomfort during the procedure and could trigger adverse reactions, such as inflammation or keloid formation, which may further complicate the healing process. It's essential for artists to consider these factors to ensure the safety and satisfaction of their clients.