To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Have used some bumble and bumble products before and was always never really sold on them, but this looked good and had good reviews...well I wasn't impressed, left my hair lank and dull, felt like I could never really wash it out. Would not recommend at all, shame that such a good company has produced such a bad product.