Turning back the clock is not always a straightforward thing, and sometimes is not possible at all.
It will probably end up being a combination of things. And it’s almost certain that it’ll involve some degree of lifestyle change (e.g., exercise, nutritional, rest changes) in addition to subliminal exposure.
and also what Saint says. There are multiple possible causes for baldness. Some are more easily reversible than others. But a typical one is age-related male-pattern baldness.