Tattoos: What Makes Them Permanent?...
[https://www.youtube.com/watch?v=DMuBif1mJz0#t=44]YouTube Link Humans shed 30,000 to 40,000 skin cells per hour, or approximately one million per day. Given that huge amount of continually sloughed-off skin, what makes t...
https://www.neatorama.com/2014/07/13/Tattoos-What-Makes-Them-Permanent/
