I became curious about this product when walking in the mall and walking by the Aveda store. They were giving away a sample of the smoothing creme. I tried it and loved it so ordered the shampoo and conditioner immediately. I figured if the creme worked so well, if I added the shampoo and conditioner the system would be magical. After using the shampoo several times and the full system, I did notice a decrease in frizz. However, in order for this to work, you really need to take the time and dry your hair 100%. If there is any dampness at all, the product cannot do its job and the humidity takes control. I have very frizzy hair so finding something that makes a bit of difference is exciting. However, I have to say the price of this shampoo is more than I like to spend. It smells great and it does work. However, I am confident I would get the same results if I just used the styling creme before blow drying my hair and just making certain I really dried my hair to ensure all dampness was gone.