Nioxin System 4 Leave-in Treatment 3.3 oz

Nioxin System 4 Leave-In Treatment is the 3.3 oz / 100 ml no-rinse scalp and hair step for color-treated, dry, or damaged hair with progressed thinning. The lightweight formula supports a fuller-looking result and completes the exact System 4 routine after shampoo and conditioner.

Key features

• No-rinse treatment adds body and supports fuller-looking hair
• Scalp-focused application complements the matching shampoo and conditioner
• Exact System 4 identity preserves the intended hair condition and thinning level

Specifications

• Size: 3.3 oz / 100 ml
• Product type: leave-in scalp and hair treatment
• System: Nioxin 4
• Hair profile: color-treated, dry, or damaged hair with progressed thinning
• Routine position: step 3; do not rinse

What's included

• One 100 ml bottle of Nioxin System 4 Leave-In Treatment
• System 4 Shampoo and Conditioner are separate steps
• The complete kit and other system numbers are separate products

Use and care

Apply to towel-dried hair, focusing on the scalp and areas of concern, then massage gently for even distribution. Do not rinse; style as desired and follow the sealed label. Avoid eyes and broken or severely irritated scalp, and stop if sensitivity develops. Fuller-looking hair is a cosmetic appearance benefit and should not be interpreted as guaranteed new hair growth.

Why barbers and stylists choose it

System 4 Leave-In Treatment adds a volumizing finishing step for color-treated hair with progressed thinning. Its leave-in format makes it useful for refreshing the scalp feel and supporting thicker-looking hair in the matching routine.