Ever bleached teeth with a whitening system and it didn't work?

I don't know what's going on. I got two trial kits and it's been about 2 days and i don't see results.. Are my teeth immune to bleach?
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I see what your saying, usually you;ll see a result quicker, than two days right? Thats what i thought when i bleached mine. But, like in 5 days in whitened. Give it about 1 week and see if you have a result, if not, check with a doctor. Hope i helped! -DLanae(:
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