Booking on price alone and auditing nothing
The cheapest quote often prices out exactly the invisible steps that matter: autoclaved tools, full cure cycles, a chelating wash before keratin. Compare like-for-like scope across a few vendors and spend one minute inspecting the kit on arrival. The infection or ruined treatment you avoid is worth far more than the difference between quotes.
Letting gel be peeled or filed off to save time
Fast removal takes layers of your nail plate with the product, and three or four rushed removals leave nails thin, bendy and sore. Insist removal is booked into the appointment with a proper acetone soak. If a technician reaches for force, stop the service.
Booking clinic-grade procedures as home visits
Injectables, laser and aggressive peels are medical procedures that belong with DHA, DoH or MoHAP-licensed practitioners in licensed premises, whatever an Instagram account promises. A home beautician's scope is grooming and cosmetics. If an offer blurs that line, the correct response is to decline and book a clinic.