Nioxin Scalp + Hair System 4 Trial Kit

Why you'll love it

• Complete trial kit for dry, damaged, coloured hair with progressed thinning
• Thickens and strengthens the hair against breakage, with colour protection
• Clinically and dermatologically tested, with visible results in 30 days*
• Gently cleanses the scalp, removing impurities and excess sebum
• Nourishing botanicals, antioxidants and UV-protecting ingredients

Target progressed thinning with a complete system. The Nioxin Scalp + Hair System 4 Trial Kit is a complete scalp and hair thickening system designed for dry, damaged, colour-treated hair with progressed thinning. Clinically and dermatologically tested, it works to thicken and strengthen the hair against breakage while protecting your colour, all in a handy trial-size kit, the ideal way to try the full System 4 routine. In fact, 8 out of 10 users saw thicker, fuller-looking hair in 30 days.*

The system covers every step: it gently cleanses the scalp to remove the impurities and excess sebum that can build up around the follicles, helping to create a healthier scalp environment, then strengthens the hair to minimise breakage and promote the appearance of fuller, thicker hair, all while protecting your colour. The Scalp + Hair Thickening Treatment is infused with nourishing botanicals, antioxidants and UV-protecting ingredients to nourish and revitalise the scalp. It's specifically tailored to dry, damaged, coloured hair where thinning has progressed.

What it does for thinning, coloured hair

Dry, damaged, colour-treated hair with progressed thinning needs a system that works on both scalp and hair. This kit gently cleanses to keep the scalp clear and balanced, then strengthens the hair to reduce breakage, which in turn helps hair look fuller and thicker (because less breaks off), while protecting your colour from fade. The nourishing, antioxidant and UV-protecting ingredients look after the scalp throughout. Used consistently as a full routine, it's designed to deliver visibly thicker, fuller-looking hair over time.

How to use it

Use the three steps of the kit in order as a complete routine, following the directions for each, and use consistently for the best results, the studies are based on 30 days of regular use. The trial size is perfect for trying the full system before committing to full sizes. You'll find more options in our professional shampoo collection.

Who it's for

System 4 is specifically for dry, damaged, colour-treated hair with progressed thinning. If your hair sits in a different category, Nioxin's numbered systems each target a different combination of hair type and thinning stage, so there may be a better-matched system for you. We've spent years helping clients in Codsall make the most of fine and thinning hair, and a complete, targeted system like this is one of the most thorough ways to support fuller, thicker-looking hair between salon visits.

Build your thickening routine

For the best results, use this kit as your complete routine, alongside the wider Nioxin range including the Density Defend styling and strengthening products. 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 the Nioxin Scalp + Hair System 4 Trial Kit to your routine for visibly thicker, fuller-looking, colour-protected hair. Free UK delivery on all orders.

*Based on consumer studies: 85% of consumers noticed a thickening effect, 80% noticed an increase in hair density, and 80% noticed an increase in hair fullness. Individual results may vary.