Buy herbal shampoo with amazon

I buy Herbal shampoo from amazon. Although sometimes found that some products used does not work as expected., But I still buy at amazon because amazon stock a huge selection including Herbal shampoo. Was found Herbal. shampoo with me to the reviews., and I make a purchase with a good score reviews. Herbal shampoo if it does not work that well, I would go with reviews as well.