I got this conditioner in a package deal with the other Biosilk Silk Therapy products (shampoo and serum). I probably would not have bought it otherwise, considering how expensive it is compared to other similar conditioning products. I have used the conditioner both with and without the accompanying shampoo, and I believe it works well either way. It does leave your hair soft and shiny, with reduced frizz and damage, and an enjoyable scent. It goes on smooth and washes out without leaving a greasy residue behind. Although the Biosilk Conditioner does everything it promises, I have found other conditioning products that have comparable results and lower price. While I would definitely buy this product if I found it on sale, I don't think that it's necessary. Really, as long as you have the Biosilk Serum (now that stuff's the real deal!) to put in your hair after washing, you don't necessarily need to use this conditioner or the accompanying shampoo.