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.
Initially, I was a bit suspicious of so many positive reviews, thought might be biased due to gifts, etc. anyhow after bit googling, I ordered this amazing product. It worked as promised, effects are visible from first use. make sure it operating at lower suction level, else might leave temporary marks on the skin.