I agree with you that cloning is not going to be available anytime in the immediate future, but why do you say 10 years just for safety issues? According to Intercytex, they have already completed the phase I safety trial. Also, isn’t the fact that scientists have successfully transplanted hair into mice and are now putting it into humans a breakthrought? According to Intercyted Seven human individuals from phase I trial currently have “cloned” hair on their heads. Isn’t that pretty huge?
If a doctor thinks that he can find a stem cell on you and move it to your head in the hope that it will grow hair (it actually might) then the doctor may be allowed to do this if he does this in his office. He has to pay attention to the medical licensing board’s rules on human experimentation, but he will not be going through a hospital-certified facility.
If he takes something out of your body (or even worse, from a mouse as you suggest) and then does something to it, following that by reinjecting it into you, then he is using a ‘drug’ which would then be covered under FDA regulations. Safety and effectiveness for a drug takes many years (15 on average) and cost about $800 million. Thousands of people must be tested and safety and effectiveness must be confirmed according to FDA rules and under FDA guidance. That is why I said 10 years. A cloned mouse hair on a human head fits that timeline for me, but if that happens on your head, be sure to stay away from cats.