Science

If skin constantly renews itself, why are tattoos permanent?

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Our skin is made up of an inner and an outer layer: the dermis and epidermis, respectively. The epidermis has an outer coating of dead cells that are constantly worn away and replaced, whereas the dermis is a permanent living layer.

Tattoos are created by placing coloured pigments in the dermis with a needle. The pigment, which is usually made of carbon and therefore, not rejected as a foreign body by the skin’s immune system, becomes bonded to the dermis, although it is clearly visible through the translucent epidermis.

One thought on “If skin constantly renews itself, why are tattoos permanent?”

  1. Thanks for such an informative article ..
    (Designer – Buzz Temporary Tattoos)

    Reply

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