System 1 amplifies hair texture and protects hair against breakage. System 1 is specially formulated as a hair thickening treatment, delivering denser-looking hair. It reduces hair loss due to breakage and strengthens the hair, while refreshing the scalp and delivering a healthy shine to natural hair with light thinning. Features & Benefits Complete professional thickening treatment for natural hair with light thinning For amplified hair texture and protection against breakage Helps remove follicle-clogging sebum, fatty acids and environmental residues from scalp and hair Refreshed scalp and increased hair volume Increased fullness of each hair strand Trial Kit System includes the following items: Cleanser 5.07oz -150ml Scalp therapy 1.7oz -50ml Scalp treatment 5.07oz -150ml Kit System includes the following items: Cleanser 10.1oz -300ml Scalp therapy 3.38oz -100ml Scalp treatment 10.1oz -300ml