Refresh and protect the scalp, prevent hair loss caused by breakage, and leave hair thicker and fuller-looking with Nioxin 3-part System 2 Scalp and Hair Treatment. This leave-in scalp and hair treatment has been specially formulated with Scalp Access 2.0. Nioxin 3-part System 2 Scalp and Hair Treatment for Natural Hair with Progressed Thinning protects and refreshes the scalp. This leave-in scalp and hair treatment has been specially formulated with Scalp Access 2. 0, a unique treatment which helps to prevent hair loss due to breakage. This pr s natural, thinning hair with a refreshed scalp environment and thicker, fuller-looking hair and is the final step of a 3-part system designed to strengthen hair and amplify hair structure. Key Features of Nioxin 3-part System 2 Scalp and Hair Treatment Leave in hair treatment specially formulated with Scalp Access 2. 0 Strengthen natural hair with progressed thinning Refresh and protect the scalp Prevent hair loss caused by breakage Hair is left thicker and fuller-looking Specially formulated with Scalp Access 2. 0 Step 3 of a 3-step treatment