To calculate the overall star rating and percentage breakdown by star, we do not 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.
For me this is a joke not so happy with this purchased no wonder why they did not show what size of a bottle this is. It looks so big on the picture but so little and took 2 or 3 weeks before I got it . Not buying it again.