Foreskin restoration is the process of expanding the skin on the penis to mimic the functionality of the foreskin,

Restoration creates a facsimile of the prepuce, but specialized tissues removed during circumcision cannot be reclaimed

Generally, the skin grows more readily in response to stretching than does the mucous membrane. The ring of muscle which normally holds the foreskin closed is completely removed in the majority of circumcisions and cannot be regrown, so the covering resulting from stretching techniques is usually looser than that of a natural foreskin.

Non-surgical foreskin restoration does not restore portions of the frenulum or the ridged band removed during circumcision

Again, you can't magically make a foreskin appear where there is no foreskin. Remutilation has some limited benefits if done right over the course of years and/or thousands of dollars' worth of surgery, but it does NOT "restore" anything.