If Skin Sheds, Why Do Tattoos Last Forever?

If human skin comes and goes like dust in the wind, why do tattoos stick around? The explanation is simple. The top layer of skin is called the epidermis. This page from A Moment of Science explains that while the epidermis is always regenerating, a tattoo needle actually penetrates through to the dermis, the second level of skin. It’s here that the tattoo makes its home for the rest of your natural life.

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