Great for adding shine and health to hair [SEP] I've used 3/4's of the bottle of this Argan Oil Shampoo for both my my daughter and I. It has added the shine that her dull hair needed. It took away the frizzes and made it easy to brush through afterwards. I use it on my very chemically/over-processed hair (in addition to a color shampoo) and it has also helped keep my hair shiny and healthy. My only reason for the 4 out of 5 star review was the size of the bottle. It's big! I would prefer a small bottle to sit better on the shelf in one of our showers. I reviewed this product for 90 days prior to posting my review.