The Nioxin System 5 Trio is best for those people who have normal to thin, medium to coarse, or chemically treated hair. The System 5 Trio provides fuller-looking hair with more moisture. This Trio consists of three products: the Nioxin System 5 Cleanser, the Nioxin System 5 Scalp Revitalizer, and the Nioxin System 5 Scalp Treatment. The Nioxin System 5 Cleanser is a shampoo that prepares the scalp and hair for a complete hair thickening treatment. It is best for chemically treated hair with light thinning. This product will clean your hair and scalp for thicker and fuller-looking hair. It has a Pro-Color Shield technology that helps remove sebum, fatty acids, and other environmental residues from your hair and scalp. Using this product is the first step of a three-part regimen that amplifies the hair structure. Gently massage the shampoo into wet hair and scalp, and let it rest for a while before rinsing it off. The Nioxin System 5 Scalp Revitalizer is a conditioner that is great for both natural and chemically treated hair. This conditioner has soothing oils with energizing properties. It also has enzymatic complexes, which will help promote an optimal scalp environment. After shampooing, apply the conditioner to wet hair and let it stay for some minutes before rinsing it off. Next in line and the final step is the Nioxin System 5 Scalp Treatment. This product increases your hair volume and is excellent for chemically-treated hair. It is a volumizing leave-in treatment that improves the fullness of every hair strand. Apply the product on damp hair and scalp (9 pumps), then massage and comb your hair. Don't rinse your hair, and style your hair as usual. Use it daily, and use it in combination with the other products of the program for best results.