That fence would look pretty funny wouldn t it? Nicely painted on the outside, but in the grooves between each wooden board it s still dark and dingy, with all of the old paint showing.
When you use bleaching strips, the same thing can easily happen to your teeth if you re not careful. The whiter your teeth become, the more pronounced those dingy cracks seem!
Eventually it can end up looking like you have small gaps between your teeth.
Definitely not the desired result!
In fact, sales of teeth whitening strips at stores were very high when first introduced but then dipped like a roller coaster when users were frustrated by the lousy results. When new and improved versions of whitening strips came out, consumers again rushed to the stores to buy and sales rose again but dropped like an anchor a second time when the new and improved whitening strips did not perform as expected.
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