What Makes Tattoos Permanent?

The earliest recorded tattoo was found on a Peruvian mummy in 6,000 BC. That’s some old ink! And considering humans lose roughly 40,000 skin cells per hour, how do these markings last?

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Claudia Aguirre details the different methods, machines and macrophages (you’ll see) that go into making tattoos stand the test of time.

Lesson by Claudia Aguirre, animation by TOGETHER.