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.
I am a regular customer of OZRO. You cannot buy a product of this high and pure quality in the shopping centre. It's a good air fresher and when I got a mosquito bite and put it on the bite then it stopped itching. Really good product.