Nioxin Scalp + Hair System 4 Conditioner 300ml

Why you'll love it

• Thickening conditioner for coloured, dry and damaged hair with progressed thinning
• Amplifies hair texture for thicker, fuller-looking hair
• With niacinamide and biotin to strengthen resilience against breakage
• Helps protect your colour, with added UV-protecting ingredients for the scalp
• Clinically and dermatologically tested, in a handy 300ml everyday size

Thicker, fuller-looking hair, with your colour protected. Nioxin Scalp + Hair System 4 Conditioner 300ml is a hair-thickening conditioner and scalp treatment made especially for coloured, dry and damaged hair with progressed thinning. It amplifies the texture of each strand and strengthens the hair's resilience while caring for the scalp and protecting your colour, so your hair looks and feels noticeably fuller. The handy 300ml size is perfect for everyday use, slotting straight into your regular wash-day routine.

This is System 4 in the Nioxin range, formulated for colour-treated hair (including dry or damaged hair) where thinning has progressed further than the light stage that System 3 targets. It's powered by niacinamide and biotin, which strengthen resilience to minimise breakage, so more of your hair stays strong and full. It gently cleanses and nourishes the scalp, removing the impurities and excess sebum that can build up around the follicles, and it's enriched with botanicals, antioxidants and UV-protecting ingredients to revitalise and protect the scalp while helping your colour last. It's clinically and dermatologically tested, with results designed to be visible in around 30 days.

What it does for coloured, progressed thinning hair

Colour-treated hair with progressed thinning faces several challenges at once: it can look noticeably finer and flatter, it's often drier or more damaged from processing, and the colour needs protecting from fade. This conditioner is built for exactly that combination, using niacinamide and biotin to strengthen resilience and minimise breakage for a thicker, fuller appearance, while caring for the scalp (with UV protection) and helping your colour last. Used as part of the System 4 routine, it's designed to deliver visibly thicker, fuller-looking hair with colour protection over time.

How to use it

After shampooing with the matching System 4 shampoo (cleanser), apply the conditioner through the hair and onto the scalp, distributing evenly. Leave it for a minute or two, then rinse thoroughly. For the best results, use it as part of the full Nioxin System 4 routine. You'll find the matching cleanser and more in our professional shampoo collection.

Who it's for

This one's for anyone with coloured, dry or damaged hair experiencing progressed thinning, who wants thicker, fuller-looking results with colour protection and a healthier-feeling, protected scalp. It's clinically and dermatologically tested, and works best as part of the full System 4 routine. We've been perfecting colour for clients in Codsall for years, so we know how much difference the right aftercare makes, and a thickening, colour-protecting conditioner like this is one of the easiest ways to support fuller-looking coloured hair between salon visits.

Build your thickening routine

For the best results, pair this conditioner with the matching System 4 cleanser and scalp treatment for the complete routine. Have a browse through our full range of professional haircare products to complete your routine, or explore all the professional names we stock over on our shop by brand page.

Add Nioxin Scalp + Hair System 4 Conditioner to your routine and enjoy thicker, fuller-looking, colour-protected hair. Free UK delivery on all orders.

*In consumer testing: 85% noticed a thickening effect, 80% noticed an increase in hair density, 80% noticed an increase in hair fullness.