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I have used different variations of the Crest Whitening Strips over the years and this is one of the latest versions they have distributed 'The Crest 3D Whitestrips' advance seal manufucated by Crest.
I am not entirely sure why they are marketing this as a '3D' product- the only thing i can think of that is that they are saying they are going to whiten your teeth from 'all angles' of your teeth rather than just the front and bottom that everyone can see. But my point is that why would you want to whiten areas of your teeth that are not physically on show.
If you are going to use this product for strips- you have to be patient and persistent. Strips are MESSY- and quite difficult to use and can easily slip off your mouth. You have to persist with using top and bottom fora bout two weeks to actually see some results- for those of you that have little time this may not be the teeth whitening option for you.
However, the plus side about this product is it a fraction of the price you would pay to get our teeth professionally whitened at the dentist (probably 100% more) and fairly easily to get hold of. I think if your teeth are really stained and discoloured you will see an improvement- but if your teeth are in good condition- you will probably notice little difference with this product (like myself) but if you have the time and on a budget it's worth it!
New Crest 3D White Whitestrips Professional Effects is formulated with the same enamel-safe ingredient dentists use