Gusaza ni inzira karemano y’ibinyabuzima, ariko ubushakashatsi bwa siyansi bwerekana ko ingamba zo kwita ku ruhu zigamije kugabanya ibimenyetso bigaragara by’ubusaza no gushyigikira uruhu rworoshye. Bumwe mu buryo bwiza cyane ni Anti-Aging Collagen Boosting, yibanda ku gukangura ikorwa rya collagen, kurinda collagen isanzweho, no kubungabunga urugero rw’amazi.
Dukurikije ubushakashatsi bwasohotse mu kinyamakuru Ikinyamakuru cy'Ubumenyi bw'uruhu (2022), uruhu rw'umuntu rutakaza hafi 1% bya kolajeni buri mwaka nyuma y'imyaka 25, bigatuma habaho iminkanyari, kugwa no kugabanuka k'amazi. Bityo, ibikorwa bishyigikira ikorwa rya kolajeni ni ingenzi cyane mu kubungabunga uruhu rukiri rukiri ruto.