How we read a salon diary without guessing
A diary from a Tan Binh hair room arrived last month with three colours of pen. Pink meant a confirmed colour, blue a cut, and graphite a tentative facial booked by a sister spa downstairs. Before any chart is drawn, we sit with the receptionist and ask what each mark actually meant on the day.
Idle chairs at 14:00 on Tuesdays often hide a lunch overlap, not a lack of guests. We annotate the page rather than averaging the week. Retention questions come later: who returned within six weeks for a toner, who vanished after a first keratin treatment.
If your book is mixed paper and screenshots, we still work from printouts you can leave on the table. We do not ask owners to rebuild history in a new system. The report names treatments as they appear on the menu: “nourishing facial 75 minutes,” not abstract categories.
Bring the last twelve weeks if you can. Shorter stretches miss Tet overtime and the quiet after school exams. We photograph pages only with permission and return the originals the same afternoon.