Another advantage is being able to get the full benefit of the products. Each one of the products complements one another. They are all made with essential oils to penetrate the hair and scalp thus allowing each product to properly absorb and do the job it is designed to do.
For example, one benefit would be: It is better to use the Scalp Therapy to remove buildup from the scalp to allow the Pomade to penetrate and properly nourish the scalp after it is cleansed than to use an over the counter "grease" that clogs your scalp, sits on top of your hair strands and ends up on your pillow (or worse, your clothes).
Using the whole line allows all of the products to penetrate without leaving your hair heavy (If you end up with heavy hair, it is usually caused by using too much).