To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
I can't believe how great this toothbrush is. I tend to use toothbrushes until they are flat. I don't know why I wait so long to replace them. So with this new purchase, I went from an old jalopy to a Ferrari. And GREAT value for money. I don't have any excuses to wear a toothbrush down to the ground, now that I have three.
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