@haidut Was referencing the study on progesterone and amputated limbs and it mentioned that the window to apply it was 24 hours and I noticed you said you would try it for 2-3 weeks, in the foreskin example. I have done it a week so far and the effects seem positive thus far. Hard to say if there has been any regrowth, but certainly no downsides. Any insight into why you thought 2-3 weeks as appropriate time? It's hard for me to believe that would do the trick, but I am happy to try. I guess at this point, I'll take a break after 2-3 weeks and assess from there.
I think skin has different regrowth requirements and much higher turnover than bones. So, it may need to be repeatedly stimulated in order to keep growing. Just a guess on my part, as this has not been tested directly yet.