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 have used Opi nail varnish for a while now and it is far better than anything else. My daughter borrowed it and she is now hooked and so was delighted when I bought her this for Christmas. The consistency is good without being too runny or too thick and the colour rich.