Why do clients ghost instead of cancelling?
Because cancelling costs them something socially and ghosting appears to cost nothing. Ringing up to say you are not coming means a small confrontation with someone who was expecting you. Saying nothing avoids it entirely.
That reframes the problem usefully. You are not trying to make people more considerate; you are trying to make the considerate option cheaper than the inconsiderate one.
Do reminders actually work?
Yes, with real evidence behind it. A Cochrane review of seven randomised trials covering 5,841 participants found text-message reminders improved attendance compared with no reminder, at a risk ratio of 1.14, on moderate-quality evidence.
Note what that is not: it is an improvement in attendance, not the 30% to 50% reduction the industry quotes without a source. The size of the effect depends on where your attendance already sits.
When should the reminder go out?
Two reminders beat one, and timing matters more than wording. Something around 24 hours ahead gives the client time to rearrange their day and gives you time to refill the slot. Something a couple of hours before catches the ones who genuinely forgot.
The critical detail is that both must be repliable. A reminder that cannot be answered is a notification; a reminder that can be answered is a chance to convert a no-show into a reschedule.
Do deposits and strike rules help?
Deposits work and they cost goodwill, so most shops apply them selectively: to new clients, to long appointments, or to anyone with a history. Applying them to everyone tends to push regulars to a shop that does not.
Strike rules — two no-shows and you book differently — work for the same reason, without taking anyone's money up front. Whichever you choose, say it once at booking, plainly, and then actually apply it.
What about the slot that is already empty?
The fastest recovery is offering it to someone else while it is still today. That means knowing the slot is free early, which is the practical argument for reminders that get a reply rather than reminders that get ignored.
A shop that learns about a gap at 2pm can fill it. A shop that learns at 3pm when nobody walks in cannot.