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.
Gave me little painful scalp zits after 2 days of use. Stopped using it and they went away. Not sure if it did anything for my hair but my scalp does not like it. I guess I'll have to give this to someone who appreciates it more than me.