Teeth whitening refills

[Myusernam]

I had trays made at the dentist a few years ago and gradually had my teeth whitened. I would like to do them again, can anyone recommend a dentist approved brand of gel please?

I thought you had to get it from the dentist?

I have my trays and was thinking that this would be a good time to get back on it but I thought you had to get the dentist to give you the new set of gels and of course they're all closed.

That is, I didn't think you could get it from Boots or anything. I'd be very interested to hear if you can.

The brand I used from the dentist was boutique, I went on their website but they are closed just now. If I cant get any refills with everything that's going on I'm just going to wait and order from there.

I have trays and use phillips zoom nitewhite 16%. I buy online it is exactly the same as the dentist gave me.

Thank you!

Phillips zoom nitewhite 6%, I bought a three pack and I'm using it for an hour a day, it's very effective.