I've got the gel & tray kit from my Dentist and paid a hefty £350 for the privilege. My Dentist said it could take anything from 2-6 weeks to get to the shade I want. I'm using the 6% stuff.
How long did it take to whiten your teeth if you used the same and did you get to the shade you wanted?
I've been using over 2 weeks now and my teeth definitely look a teeny bit less yellow but some look slightly opaque now rather than bright white 🤔