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 bought this equipment for my girl and she is super excited and happy. Now she can do her nail thing by her own in home. The device is very simple and easy to use, the design is so great that it doesn’t flash into your eyes directly. Also the light has no problems in our skins so safe to use. Very happy with the product!!!