TED-Ed: What makes tattoos permanent? - Claudia Aguirre

The video explores the history and cultural significance of tattoos, highlighting their ancient origins and varying meanings across cultures. It explains the tattooing process, detailing how ink is embedded into the skin's dermis layer, making tattoos permanent. The body's immune response, involving macrophages and fibroblasts, plays a crucial role in maintaining the tattoo's appearance. Over time, tattoos may fade due to natural processes and UV exposure, but proper care can mitigate this. Tattoo removal is possible through laser treatments, though it remains more challenging than getting a tattoo.

How do environmental factors like UV radiation affect tattoos over time?

Discuss the process and challenges involved in tattoo removal.