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.
The first time I received this set, the base was semi dried and so thick that I couldn’t pull the brush out from the bottle. Thinking it was a one off, I ordered another set, but like the first it too was too thick to use. Aimeili needs to fix this issue, otherwise the polishes are great