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 replaced my old Babyliss hairdryer after ten years of use. This dryer is amazing in how quickly it dries the hair; however, I'm removing one star because Babyliss removed the "cool" button setting, which my older Babyliss hairdryer did have. Not a huge deal but it's what I would change with this device because it's something I routinely used. The 'hot' setting is very hot, so would suggest caution in not burning the hair using it. Using the "Warm" setting and with the force of the air, it dries the hair very quickly.