Running a single shop makes fragrance consistency simple: one team, one process, one scent, easy to enforce just by being the person who trained everyone. Multiple locations change that math considerably, and it is worth being deliberate about it before inconsistency becomes the default.
The core risk with multiple locations is drift: one shop settles into a habit of using whatever is on hand that week, another location standardizes on a different scent entirely, and within a year, a client who visits two of your locations gets two different experiences from what is supposed to be one brand. That inconsistency undercuts the exact thing a signature scent is supposed to build.
The fix is treating fragrance selection the same way you treat any other brand standard: documented, not left to local discretion. Specify the exact scent for your top tier package across every location, the same way you would specify an exact product line for ceramic coating rather than letting each shop pick its own brand.
Build it into location onboarding and periodic audits the same way you would any other quality standard. A quick check during a location visit, does the finishing fragrance match what every other location uses, is a five second verification that protects a genuinely important piece of brand consistency most multi location operators never think to formalize.
A signature scent only works as a signature if it is actually the same signature everywhere your name is on the door. Multiple locations do not have to mean multiple experiences.