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.
It worked, really pleased with this Turban. I washed my hair the day before which is shoulder length and is fine put the Turban on when I went to bed leaving about ant inch hanging out and when I took it off this morning a tangle or frizz in site. What I’d left out had flicked up but I just brushed it out perfect and nice and shiny.