kojic acid vs alpha arbutin serums? 🤔 which is actually faster for skin texture improvement?

been going down a bit of a rabbit hole lately regarding texture improving actives and wanted to pick ur brains on a general ingredient debate.

specifically kojic acid vs alpha arbutin. we see them in soooo many k-beauty and j-beauty lines (like the hada labo shirojyun stuff, or various k-beauty brightening toners) but im curious how they actually stack up against each other for evening out texture and old sun spots.

like is one noticeably faster at evening out skin texture? or is alpha arbutin way gentler for sensitive skin compared to kojic? i feel like kojic can sometimes be a bit unstable or irritating if the ph is off in the formulation, but maybe im wrong.

cant wait to read ur thoughts and learn some new science stuff today