Into which layer of the skin do you think tattoo ink is injected? Explain why
What will be an ideal response?
The ink from a tattoo must be injected into the dermis. The cells of the epidermis are sloughed every 40 to 50 days, so a tattoo injected here would hardly last more than a month. Cells that begin life in the stratum basale will travel through all the strata of the epidermis until they reach stratum corneum. These cells are shed and replaced by cells undergoing mitosis in deeper layers. The ink injected into the dermis for a tattoo would remain in this layer.
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