Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
Surprisingly soft feel while offering a deep cleanse. However, you cannot recharge or replace the batteries so this will be another one for the landfill. I recommend spending a bit more for the rechargeable one because it really is a great product.