Amazon calculates a product's star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers and factors that establish reviewer trustworthiness.
with all those reviews I bought it but all I can say is it doesn't suits my skin. I have oily skin. This product makes my skin somewhat dry. The skin texture becomes rough. Makes me feel like no moisture is left on my skin. Better to shop from its own website and ask for free sample before giving it a try.