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’m not that keen on this product. It promised me softness and manageability but what I got was brown residue everywhere in the shower and dried out hair that knots really easily. Yes, it is much better for the environment but I’m still spending money on bottles of conditioner for my hair. Oh well, I gave it a try but there are better ones on the market.