Toothpaste Rheology Additives · NCC / NC
What Is NCC / NC?
NCC / NC — Nanocrystalline Cellulose — is a specialized rheology additive positioned within LANDU's dedicated Toothpaste Rheology Additives portfolio. Unlike general-purpose cellulose derivatives, NCC / NC is designed for premium toothpaste systems that require precise control over paste body, flow behavior, long-term stability, and brushing experience.
Scientific literature confirms that nanocrystalline cellulose significantly improves viscosity, shear-thinning behavior, and suspension structure in aqueous polymer systems — properties that are directly relevant to modern oral care formulation.
Why It Matters
Why NCC / NC Matters in Toothpaste Formulations
Toothpaste is a highly structured system that must balance several performance requirements simultaneously — from production through to the final brushing experience. Here is why specialized rheology support is essential.
A Toothpaste Must Perform at Every Stage
From high-shear manufacturing and tube filling, through months of storage, to the precise ribbon dispensed on a brush — every stage demands precise rheology control.
Nano-Scale Network Formation
NCC / NC rod-shaped nanoparticles (5–20 nm diameter, 100–500 nm length) form a three-dimensional hydrogen-bonded network — delivering yield stress, structural stability, and efficient shear-thinning in a single ingredient.
Premium Brushing Experience
Smooth extrusion, consistent ribbon shape, and a non-gritty sensory feel — from first to last use.
Formulation Requirements
What Toothpaste Systems Need
Functional Profile
Key Benefits of NCC / NC
Rheology Support
Creates a controlled flow profile with ideal viscosity and strong shear-thinning behavior — easy dispensing under pressure, immediate recovery at rest, and a pleasant, smooth brushing feel throughout use.
Structural Balance
The nano-scale hydrogen-bonded network reinforces the internal structure of the toothpaste matrix — preventing phase separation, reducing syneresis, and maintaining product integrity over the full shelf life.
Better Consistency
Supports uniform batch-to-batch performance and long-term stability — critical for premium oral care manufacturing where reproducibility directly impacts brand reputation and consumer trust.
Enhanced Shear-Thinning
Provides strong thixotropic performance — high viscosity at rest for stability and suspension, rapid viscosity reduction under shear for easy extrusion and brushing, and fast structural recovery when shear is removed.
Stronger Oral Care Differentiation
As part of LANDU's dedicated Toothpaste Rheology Additives portfolio, NCC / NC helps position oral care products as technically advanced and application-specific — differentiating brands in the competitive 2026 market.
How It Works
Mechanism of Action
5–20 nm
Particle Diameter
100–500 nm
Particle Length
3D
H-Bond Network
0.5–2.0%
Typical Dosage
NCC / NC nanoparticles carry a surface charge and form a three-dimensional hydrogen-bonded network in aqueous systems. This network is the source of its unique rheological behavior across the three key states of a toothpaste's use cycle.
At Rest — Storage State
Network Creates Yield Stress & High Viscosity
The three-dimensional hydrogen-bonded network is fully intact. This creates a high yield stress that holds the paste structure rigid — stabilizing abrasives and active ingredients against settling, preventing syneresis, and maintaining the ribbon shape after dispensing.
Under Shear — Dispensing & Brushing
Network Breaks Down — Strong Shear-Thinning
When shear is applied — squeezing the tube or brushing — the hydrogen-bond network temporarily breaks down and the nanorods align with the direction of flow. Viscosity drops sharply, producing the smooth, easy-spreading behavior consumers expect from a premium toothpaste.
After Shear — Recovery
Structure Rapidly Rebuilds — Thixotropic Recovery
Once shear is removed, the nanorod network rapidly re-forms through hydrogen bonding. Viscosity and structural integrity are restored — the paste holds its shape on the brush, active ingredients remain suspended, and the product is ready for the next use.
Formulator's Note: This three-phase behavior makes NCC / NC particularly effective as a rheology additive in toothpaste — it simultaneously improves paste stand-up, reduces settling, and enhances sensory performance during brushing, often at lower loading levels than traditional thickeners.
Peer-Reviewed Evidence
Scientific Backing
Recent peer-reviewed studies confirm the rheological advantages of nanocrystalline cellulose in aqueous polymer systems directly relevant to toothpaste formulation. The findings below support the use of NCC / NC as a technically advanced rheology-support ingredient for structured oral care systems.
NCC in CMC Solutions: Viscosity & Shear-Thinning Enhancement
Adding cellulose nanocrystals to carboxymethylcellulose (CMC) solutions significantly increased viscosity and made the system more shear-thinning. Since CMC is a common base material in toothpaste, this finding is directly relevant to oral care formulation — confirming that NCC / NC can enhance the performance of existing CMC-based toothpaste systems.
Power-Law Shear-Thinning Across Concentration Range
NCC-thickened suspensions showed strong shear-thinning behavior across a wide concentration range, with viscosity following a power-law model. The study also demonstrated that salt and pH can be used to tune rheological performance — offering formulators additional control over toothpaste system design.
Nanocellulose Networks: Rheology, Yield Stress & Thixotropy
This comprehensive review showed that nanocellulose-rich aqueous suspensions can form structured networks that control rheology, yield stress, and thixotropy in polymer systems — confirming the mechanistic basis for NCC / NC's performance in toothpaste and other structured oral care formulations.
Scientific Confidence: These three peer-reviewed studies collectively confirm that NCC / NC is a technically advanced, evidence-based rheology additive for structured oral care formulations — not simply a trend ingredient.
3 Peer-Reviewed Studies
Supporting NCC / NC as a technically advanced rheology solution for structured oral care systems
Performance Comparison
NCC / NC vs. Other Toothpaste Rheology Additives
The table below summarizes the positioning of NCC / NC compared with other commonly used toothpaste rheology additives — helping formulators identify the right tool for each application need.
| Additive | Main Advantage | Shear-Thinning | Structural Stability | Typical Dosage | Difference vs. NCC / NC |
|---|---|---|---|---|---|
| NCC / NC | Nano-network reinforcement, highly efficient shear-thinning | ★★★★ | ★★★★ | 0.5 – 2.0 % | — |
| MCC / MC | Cost-effective, basic thickening and suspension | ★★★ | ★★★ | 1.0 – 3.0 % | Larger particles, weaker network structure; typically requires higher loading |
| L-HPC / PC | Balance of disintegration and flowability | ★★★ | ★★★ | 0.5 – 2.5 % | More focused on disintegration; weaker structural network support |
| Traditional CMC | Basic thickening, widely used, cost-effective | ★★ | ★★ | 0.5 – 1.5 % | Usually requires higher loading; weaker shear-thinning; no nano-network formation |
Key insight: NCC / NC offers stronger nano-scale network formation and more efficient shear-thinning performance compared with MCC/MC or traditional CMC — often achieving target rheology at lower loading levels. Data is based on public literature and LANDU formulation experience. Actual performance depends on product grade and specific formula design.
★★★★
NCC / NC
Shear-Thinning
★★★
MCC / MC
Shear-Thinning
★★★
L-HPC / PC
Shear-Thinning
★★
Traditional CMC
Shear-Thinning
Application Focus
Toothpaste Application Scenarios
At LANDU, toothpaste is treated as a distinct high-performance application supported by its own specialized rheology additive portfolio. Here are the five key scenarios where NCC / NC delivers measurable value.
01
Abrasive & Whitening Agent Suspension
Improved suspension of abrasives and whitening agents to reduce settling — ensuring uniform particle distribution and consistent performance from the first squeeze to the last.
02
Pumpability & Filling Efficiency
Better pumpability and filling efficiency with fewer blockages during high-speed manufacturing — reducing downtime and improving production throughput for premium toothpaste lines.
03
Ribbon Stand-Up After Extrusion
Enhanced stand-up after extrusion with reduced slumping — the dispensed ribbon holds its shape on the brush, delivering the premium visual cue that consumers associate with quality toothpaste.
04
Smoother Brushing & Sensory Performance
Smoother brushing feel with improved sensory performance and active retention — the shear-thinning network creates a non-gritty, premium texture that enhances consumer satisfaction and repeat purchase.
05
Reduced Total Thickener Loading
Potential reduction in total thickener loading while maintaining target performance — NCC / NC's nano-scale network efficiency means less material can achieve the same or better rheological outcome compared with conventional thickeners.
Portfolio Fit
Technical Positioning Within LANDU's Oral Care Portfolio
NCC / NC belongs to the Toothpaste Rheology Additives family alongside MCC / MC and L-HPC / PC. Together, these three product directions form a technically layered oral care additive system — giving formulators multiple focused tools rather than a single generic solution.
Renewable Wood Pulp
Green Credentials
Sustainability & Regulatory Compliance
NCC / NC is derived from renewable wood pulp through sustainable production processes. It is biodegradable, biocompatible, and aligned with the growing market demand for plant-based and environmentally responsible oral care ingredients.
LANDU's NCC / NC grades are suitable for cosmetic and oral care applications and can support compliance with major international requirements — including REACH and applicable FDA-related guidelines — depending on product grade and market use.
By using NCC / NC, brands can support clean-label, sustainability, and green formulation goals without sacrificing technical performance — a key differentiator in the 2026 premium oral care market.
The LANDU Advantage
Why Choose LANDU NCC / NC
Scientifically Supported
Backed by peer-reviewed studies in Nanomaterials and BioResources confirming NCC / NC's rheological advantages in aqueous polymer systems directly relevant to toothpaste formulation.
Dedicated Oral Care Focus
NCC / NC is positioned within a dedicated Toothpaste Rheology Additives portfolio — not a general-purpose additive — reflecting LANDU's deep understanding of oral care formulation requirements.
Full Technical Support
LANDU's R&D center and application laboratory provide technical consultation, customization, co-development, formulation optimization, lab testing support, and document assistance for every customer.
Sustainable & Compliant
Renewable, biodegradable, and suitable for cosmetic and oral care applications under major international standards — supporting clean-label and green formulation goals without compromising performance.
20+
Years Cellulose Expertise
3
Peer-Reviewed Studies
0.5–2%
Typical Dosage
80+
Countries Served
Knowledge Base
Frequently Asked Questions
Trusted Oral Care Partner
A Specialized, Scientifically Supported Rheology Solution
LANDU's NCC / NC represents a specialized and scientifically supported rheology solution within our professional oral care additive portfolio. Backed by peer-reviewed literature on nanocrystalline cellulose and supported by our dedicated Toothpaste Rheology Additives product architecture, NCC / NC offers advanced performance in viscosity control, structural stability, abrasive suspension, and batch consistency for toothpaste development. For toothpaste formulations that require targeted rheology support, NCC / NC provides a strong technical starting point.
Ready to Get Started?
Need Specialized Rheology Support for Your Toothpaste Formula?
Contact LANDU's technical team for product guidance, formulation support, lab testing, sample requests, and quotations. We're ready to help you develop a better toothpaste.
Product Guidance
Grade selection & recommendations
Formulation Support
Lab testing & optimization
Sample Requests
Free evaluation samples + TDS
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Pricing & lead-time information
All product specifications are typical values for reference only. Actual performance may vary depending on formulation, processing conditions, and end-use application. Contact LANDU for product-specific Technical Data Sheets. · landercoll.com · landu-china.com