I absolutely love this shampoo!! It has sort of tingling affect similar to that found in higher end salon brands (ie Tea Tree or Paul Mitchell) but for a fraction of the cost!! This is important to me as someone who suffers from Psoriasis majorily on my scalp. It is very soothing to the scalp, so preventing fallout while calming and preventing any irritation, this is a no brainer for me personally!! The shampoo had a vey invigorating/energizing quality to it as the caffeine and niacin work, it's quit refreshing and enjoyable. This is for sure a must have for me from now on, I even catch the hubby using it as he states it's really refreshing and it's going to save him from going bald