[Histonet] How deep in skin do hair dyes and shampoos penetrate?

[Jorge A. Santiago-Blay]

Dear Histonetters:

The other day, someone ask me in class, how deep in skin do hair dyes and
shampoos penetrate? I know tattoos are generally placed in the dermis but I
was not sure re. hair dyes and shampoos (incl. those that cause a tingling
sensation).

If you know, please feel free to email me off the list.

Gratefully,

Jorge
blayjorge at gmail.com

Jorge A. Santiago-Blay, PhD
blaypublishers.com

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