I bought these 3 packs from Revain in October 2017. Fast forward to March 2018 when I'm going to get the last lace out of the box and it's deformed. It was one not seen until it was taken out of the box. I went to the website after checking the date of purchase and then just called Philips. They sent me new 3 packs and even registered my toothbrush I bought last September when I mentioned my last one had died after 2 years. Excellent customer service. Regarding these tips: I've tried generics, but nothing beats the original. I especially like the bristles. I brush at least 3 times a day and these brush heads can last longer than regular Philips bristle brush heads, although they last less than the recommended 3 months on each pack. Those who use it less frequently will find this 3 month estimate more accurate. Another plus in buying real shoes is that they always fit perfectly. Whenever I've tried generics, I've always had problems with the heads vibrating, which really annoyed me. Since then I have relied on branded products. I'm not sure how common it is to see a bad nozzle in a package, but it might be a good idea to check all 3 when you receive your package. I hope this was helpful and happy cleaning!
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