How did you look when you were 22? Were you a buff guy with a six pack?
In that case NKNW or another Testosterone Gel will make you a buff guy with a six pack.
On the other hand, if you were an average guy at 22, with potential, then NKNW can turn back the clock and give you back that potential. With the wisdom you've hopefully earned since then, and the extra energy you'll have, your body be healthier and look better than ever.
With a Testosterone Gel, realistic expectations are 1) breaking though plateaus 2) more energy 3) cutting fat away from your chest and hips.*
*Testosterone alone won't eliminate much fat, but it should prevent it from loading up in womanly areas that give you man boobs and love handles.
As far as length of time goes, it's harder to estimate. So much depends on your diet, metabolism, training methods, genetics. . . not to mention how much NKNW you use, and what your baseline Testosterone level was.
In general, the first month you see improved strength mood and libido. By moth three, family and friends will notice your improved body- three months is a rule of thumb for effective training in general, not testosterone. You might see small changes in a matter of weeks. After roughly six months your "transformation" will be complete, unless you increase your dosage.