Find the Nioxin routine that matches your hair’s condition and the level of thinning you want to address cosmetically. Compare Systems 1–4, Scalp Relief and Age Defense, then choose targeted care or styling for fuller-looking hair. Kits, duos and replacement bottles have different contents.
System 1: natural hair, light thinning
System 1 is the current starting point for natural, untreated hair with light thinning. Compare the complete kit with a shampoo-and-conditioner duo: the duo does not include the scalp-and-hair treatment unless explicitly stated. Replacement bottles let you replenish the step you use first.
- Nioxin System 1 Hair System Kit – 3-Step Thickening Regimen for Natural Thinning Hair
- Nioxin System 1 Scalp Therapy Revitalising Conditioner – Moisture for Thinning Hair
- Nioxin System 1 Scalp & Hair Treatment – Leave-In Density Boost for Natural Thinning Hair, 100 ml
- Nioxin System 1 Cleanser Shampoo – Thickening Care for Natural Hair with Light Thinning
- Nioxin System 1 Shampoo & Conditioner Duo – Cleanse and Condition for Natural Thinning Hair
System 2: natural hair, progressed thinning
Choose System 2 for the natural-hair category when thinning is more progressed. The cleanser, rinse-out conditioner and leave-in scalp-and-hair treatment are three distinct steps. Check kit contents and bottle sizes rather than comparing product prices as though every listing contained the same routine.
- Nioxin System 2 Scalp Therapy Revitalising Conditioner – Moisture for Progressed Thinning
- Nioxin System 2 Scalp & Hair Treatment – Leave-In Density Boost for Progressed Thinning, 100 ml
- Nioxin System 2 Shampoo & Conditioner Duo – Cleanse and Condition for Progressed Thinning
- Nioxin System 2 Hair System Kit – 3-Step Thickening Regimen for Progressed Thinning, 300 ml + 300 ml + 100 ml
- Nioxin System 2 Cleanser Shampoo – Thickening Care for Natural Hair with Progressed Thinning
System 3: treated hair, light thinning
System 3 is the current light-thinning option for colour-treated, dry or damaged hair. Choose the kit for the listed complete system or replenish individual steps. Keep the leave-in treatment separate from the conditioner: their application directions differ. A fullness-focused cosmetic routine is not a promise of regrowth.
- Nioxin System 3 Hair System Kit – 3-Step Regimen for Colour-Treated Hair with Light Thinning, 300 ml + 300 ml + 100 ml
- Nioxin System 3 Shampoo & Conditioner Duo – Cleanse and Condition for Colour-Treated Hair with Light Thinning
- Nioxin System 3 Scalp Therapy Revitalising Conditioner – Moisture for Colour-Treated Hair with Light Thinning
- Nioxin System 3 Cleanser Shampoo – Thickening Care for Colour-Treated Hair with Light Thinning
- Nioxin System 3 Scalp & Hair Treatment – Leave-In Density Boost for Colour-Treated Hair with Light Thinning, 100 ml
System 4 + legacy System 6
System 4 is the current progressed-thinning option for colour-treated, dry or damaged hair. Nioxin now directs former System 6 users toward System 4, but the System 6 conditioner still listed here retains its own identity. Do not assume that legacy and current bottles have identical formulas; verify the product you are ordering.
- Nioxin System 4 Scalp & Hair Treatment – Leave-In Density Boost for Colour-Treated Hair with Progressed Thinning, 100 ml
- Nioxin System 4 Scalp Therapy Revitalising Conditioner – Moisture for Colour-Treated Hair with Progressed Thinning
- Nioxin System 6 Scalp Therapy Revitalising Conditioner – Moisture for Coarse Thinning Hair
- Nioxin System 4 Cleanser Shampoo – Thickening Care for Colour-Treated Hair with Progressed Thinning
- Nioxin System 4 Shampoo & Conditioner Duo – Cleanse and Condition for Colour-Treated Hair with Progressed Thinning
- Nioxin System 4 Hair System Kit – 3-Step Regimen for Colour-Treated Hair with Progressed Thinning, 300 ml + 300 ml + 100 ml
Scalp Relief: comfort-focused care
Scalp Relief groups shampoo, conditioner, soothing serum and a kit around a sensitive, dry or itchy scalp. Choose the missing step or compare the kit contents. The serum is a leave-in step, not a rinse-out conditioner. This family is different from the numbered thinning systems.
- Nioxin Scalp Relief Soothing Serum – Leave-In Relief for Sensitive, Dry and Itchy Scalp, 100 ml
- Nioxin Scalp Relief 3-Piece Kit – Complete Regimen for Sensitive, Dry and Itchy Scalp
- Nioxin Scalp Relief Cleanser Shampoo – Soothing Cleanse for Sensitive, Dry and Itchy Scalp
- Nioxin Scalp Relief Conditioner – Soothing Moisture for Sensitive, Dry and Itchy Scalp
Age Defense: wash and serum routine
Age Defense offers its own shampoo, conditioner and serum. Compare it as a named routine rather than a numbered-system refill. The conditioner provides a rinse-out care step; the serum remains on the scalp according to its instructions. Choose by the product role and your cosmetic hair goal.
- Nioxin Age Defense Conditioner – Strengthening Moisture for Ageing, Thinning Hair
- Nioxin Age Defense Serum – Leave-In Density Serum for Ageing, Thinning Hair, 70 ml
- Nioxin Age Defense Shampoo – Strengthening Cleanse for Ageing, Thinning Hair
Targeted scalp and density steps
Separate scalp exfoliation from leave-in fullness care. Purifying Exfoliator and Scalp Renew have their own use and rinse directions; Night Density Rescue is an overnight serum. Compare Hair Booster, Diamax and Diamax Advanced as individual formulas, not escalating system numbers. Add one targeted role rather than every density product.
- Nioxin 3D Intensive Hair Booster – Targeted Density Treatment for Thinning Areas, 100 ml
- Nioxin Night Density Rescue – Overnight Serum for Denser-Looking Hair, 70 ml
- Nioxin Diamax – Thickening Leave-In Treatment for Fuller-Looking Hair, 100 ml
- Nioxin Diamax Advanced – Advanced Thickening Leave-In Treatment, 100 ml
- Nioxin Scalp Renew Density Restoration – Weekly Exfoliating Scalp Treatment, 75 ml
- Nioxin Purifying Exfoliator – Pre-Shampoo Scalp Scrub, 50 ml
Breakage-focused wash and conditioning
Hair Fall Defense Ultimate Power is the shampoo listed here; it is not a kit and does not include a serum. Deep Protect Density Mask is a separate conditioning treatment. Distinguish breakage care along the hair fibre from promises about new hair growth, and follow the mask’s own frequency.
- Nioxin Deep Protect Density Mask – Weekly Strengthening Mask for Thinning Hair
- Nioxin Hair Fall Defense Ultimate Power Shampoo – Anti-Breakage Cleanse for Weak Hair
Style for body, lift and hold
Choose root-lifting spray for placement, foam for a fuller styling base, gel for sculpting or Niospray for finishing hold. Therm Activ is the heat-preparation step. Instant Fullness dry shampoo refreshes between washes. These styling effects complement care without replacing a cleansing routine.
- Nioxin Density Defend Foam – Root-Lifting Styling Foam for Thinning Hair, 192 g
- Nioxin Niospray Strong Hold Hairspray – Firm Finish for Fine, Thinning Hair, 300 g
- Nioxin Thickening Spray – Body-Building Spray for Fine, Thinning Hair, 150 ml
- Nioxin Thickening Gel – Sculpting Gel for Fine, Thinning Hair, 150 ml
- Nioxin Therm Activ Protector – Heat Protection Spray for Fine, Thinning Hair, 150 ml
- Nioxin Bodifying Foam – Volumising Mousse for Fine, Thinning Hair, 192 g
- Nioxin Instant Fullness Dry Shampoo – Volumising Refresh for Flat, Thinning Hair, 119 g
- Nioxin Density Defend Root Lifting Spray – Targeted Root Lift for Thinning Hair, 150 ml
Bottle accessories
The litre pump is an accessory, not a treatment. Confirm the bottle size and compatibility listed on the pump page before adding it to a shampoo or conditioner order. Do not assume it fits every bottle simply because the brand matches.
Before you choose
System 1: natural hair, light thinning
System 1 is the current starting point for natural, untreated hair with light thinning.
System 2: natural hair, progressed thinning
Choose System 2 for the natural-hair category when thinning is more progressed.
System 3: treated hair, light thinning
System 3 is the current light-thinning option for colour-treated, dry or damaged hair.
Your questions, answered
Does a duo include all three steps?
System 1 is the current starting point for natural, untreated hair with light thinning. Compare the complete kit with a shampoo-and-conditioner duo: the duo does not include the scalp-and-hair treatment unless explicitly stated. Replacement bottles let you replenish the step you use first.
When should I compare System 2?
Choose System 2 for the natural-hair category when thinning is more progressed. The cleanser, rinse-out conditioner and leave-in scalp-and-hair treatment are three distinct steps. Check kit contents and bottle sizes rather than comparing product prices as though every listing contained the same routine.
What happened to System 6?
System 4 is the current progressed-thinning option for colour-treated, dry or damaged hair. Nioxin now directs former System 6 users toward System 4, but the System 6 conditioner still listed here retains its own identity. Do not assume that legacy and current bottles have identical formulas; verify the product you are ordering.
Scalp Relief or a numbered system?
Scalp Relief groups shampoo, conditioner, soothing serum and a kit around a sensitive, dry or itchy scalp. Choose the missing step or compare the kit contents. The serum is a leave-in step, not a rinse-out conditioner. This family is different from the numbered thinning systems.
Should I add every density treatment?
Separate scalp exfoliation from leave-in fullness care. Purifying Exfoliator and Scalp Renew have their own use and rinse directions; Night Density Rescue is an overnight serum. Compare Hair Booster, Diamax and Diamax Advanced as individual formulas, not escalating system numbers. Add one targeted role rather than every density product.