If you have never offered a finishing fragrance as part of your detailing service, the idea can feel like a bigger operational decision than it actually is. In practice, it is one of the simplest additions to make, and most of the complexity people imagine does not really exist.
Start small. Pick a single scent rather than a full assortment, something Balanced enough to work across a wide range of client preferences without gambling on anyone's specific taste. This removes the decision fatigue of choosing per client and gives you a consistent, repeatable finishing step instead.
Build it into your existing process, not as a separate step clients have to opt into, but as the literal last thing that happens before you hand the keys back, the same way you already do a final walkaround or a last wipe down. This takes about thirty seconds and requires no new equipment, no new training beyond knowing where to hang it.
Decide early whether it is included in your top tier package or offered as a paid add-on. Both work. Included tends to be the simpler starting point, since it removes any friction of asking, and it gives every finished job a small, consistent point of difference from a basic wash without you having to sell anything extra.
You do not need a whole new service line to start. You need one good scent, thirty seconds at the end of every job, and the willingness to make it standard rather than optional. Everything else can come later, once you know it is working.