I’d give it time, the description is really confident in the trauma half, not so confident it’ll actually regrow the foreskin. So wait for some testimonials and go from there.
The trauma and and scar tissue healing will definitely work, I am unsure how much skin can be grown, but it will work to the best that can be done and extra.
Or just use https://forum.enlightenedstates.com/t/the-alchemical-revision-of-trauma/41981