Public information does not confirm that Frankie Muniz had a surgical hair transplant. The better-supported explanation is that he partnered with HairClub and used its non-surgical Xtrands+ system, which blends with existing hair to create fuller-looking coverage.
This is why searches for Frankie Muniz’s hair transplant can be confusing: visible density does not always mean that follicles were surgically moved from a donor area.