Don't listen to the one star people.
This is a great product.  It smells great, it leaves your hair clean and when used with the conditioner it leaves your hair soft and manageable.  I am only about a week into using the product but I am getting noticeable results and my family can see it as well.  I have grey hair as well and it keeps it looking shiny and silver.  I can't wait to see what 30 days of use brings.  In my opinion the people that gave this product on star are looking for miracles instead of looking at genetics.  Not to mention if they say it's drying out their hair then they probably aren't using the conditioner and they have have a water issue as well.  Don't listen to the one star people.  BUY this product and see for yourself.  I use it everyday and love it.  I do recommend buying the package deal with the conditioner.  I am not getting paid for this review.
Rating: 5 stars