A client gets manicures every 2 weeks, €30 each. That's €780/year. Add haircuts and coloring — €1,500-2,500. Lose 10 of those — serious hit.
3-7% cashback, Gold/Platinum/VIP status. Push reminders: "It's been 3 weeks since your last manicure. Book now?" Birthday — discount on their favorite treatment, 90% show up.
Referral program — "Bring a friend, you both get €5." In beauty, friend recommendations are the #1 channel.
Booking platforms pull clients to competitors. Your weapon — direct connection through push and bonuses.