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.
Lovely shampoo, smells great and goes far. You only need a small amount and lathers in your hair beautifully. I have got through two bottles and it’s really strengthened my hair and repaired broken flyaways around my hairline. My hairdresser sells these for £21 each... so much more reasonable to buy on Amazon.