Skipping the patch test because you have coloured your hair for years
Sensitisation to hair dye builds with repeated exposure, so a clean history is not immunity. New vendor, new brand, or a long gap since your last colour all justify the 48-hour test. It costs two short visits or a self-applied dab; a facial reaction costs an emergency room.
Treating bridal bookings like a normal appointment
One artist cannot finish a bride and four relatives in a morning, and no trial means the first attempt at your wedding look happens on your wedding day. Confirm team size in writing, hold a photographed trial, and build an hour of buffer before photos.
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.