PDR is especially effective on smooth, shallow dents where the metal has flexed rather than folded sharply

https://arthurcxzn985.valiantfield.com/posts/door-ding-repair-made-easy-with-paintless-dent-repair

PDR is especially effective on smooth, shallow dents where the metal has flexed rather than folded sharply, allowing technicians to return the panel to its original contour.