Return Window
A return window is the expected interval between a customer's visits for a given service: the date range inside which their next appointment should fall. Example: a facial on a 4-week rhythm has a return window centered at 28 days, with “due” from day 25 and “overdue” past day 35. Every sound appointment-retention metric is built on windows like these.
How to set one
Start from clinical or practical cadence. Treatment protocols, manufacturer guidance, practitioner judgment: the window centers on the professionally right interval, not on revenue targets.
Add tolerance bands. Due slightly before the center (scheduling needs lead time), overdue clearly after it (past normal noise, not past patience). A day-28 center with due from 25 and overdue past 35 is typical for monthly rhythms; scale proportionally for slower cadences.
One window per service category. Never one flat rule for the business, flat rules harass slow-cadence clients and miss fast-cadence lapses simultaneously.
Review annually. Cadences drift with service mix and practitioner roster; stale windows quietly corrupt every metric built on them.
What windows power
Return windows define rebooking targets (book inside the window), follow-up timing (nudge as due approaches), lapse (past deadline plus grace), return adherence measurement, and the overdue queue itself. Med spa specifics, treatment cadences and per-category thinking, are worked through on our med spa guide. A business without defined windows is not measuring retention; it is admiring visit counts.
Frequently asked questions
What is a customer return window?
The expected interval between visits for a given service: the date range inside which the next appointment should fall, with due and overdue thresholds. It turns vague absence into measurable lateness.
How often should med spa clients return?
It depends on the treatment: facials often run monthly, neuromodulators multi-monthly, laser series on protocol intervals. The honest answer is always per service category, never one number for the business.