9e7742db_ime_manipulation___Heroes_Wiki__Theory
[Citations] None [Notes] - Bodily aging is caused by physical degradation of the body over time, not time itself. + If the user had full control over his power, he or she could reverse time on their bodies (making themselves physically younger), whilst keeping it still on their minds, to retain their memories and identity. [Theory] 
Theoretically, if Hiro can bend space and time, he could make himself look younger, physically become younger and make himself invisible.
Theory:Space-time manipulation - Heroes Wiki
Theory