I had my teeth whitening done by my dentist with custom made trays & home kit, I was told to use it for 4 nights overnight, I done this using 3 of the 4 syringes that were given to me and I am so unhappy, the bottom of my top teeth have whitened much more than the top part of my teeth (near the gum) my dentist said this is normal and that whitening will not change the whole colour of my teeth, at £400 I feel gutted I have not got the result I thought I would get and don’t know what to do? Please could u give me some advice