Patch tests with the clock attached
Record the patch test, its date and its outcome against the client, so the waiting period before a first treatment is visible rather than remembered.
The information sits on the booking, not in a note somebody has to go looking for.
Settings on every session
Log device, wavelength, fluence and pulse duration against each appointment, so escalating energy across a course is a decision rather than a guess.
Fitzpatrick type stays on the client record where every practitioner treating them can see it.
Courses and areas that do not blur
Hair removal runs across multiple areas on different schedules. Track each area's session count separately rather than as one lump.
Clients booking underarms and legs on different cycles stop being an admin problem.