What is it: System Kit 2 Shampoo is designed for natural, untreated hair with progressed thinning. 
Why you'll love it: Clinically and dermatologically tested, the shampoo nourishes and gently cleanses your hair to prevent against follicle-clogging sebum, resulting in thicker, fuller hair.  Featured ingredients: Formulated with a powerful blend of niacinamide, biotin and caffeine to help nourish the hair root, stimulate hair follicles and strengthen the hair.