As a new-type foreign trade service provider driven by both technology commercialization and foreign trade, HiSiaddi has established a "1+2+3+4=1" service system and can supply raw materials from multiple well-known original manufacturers of PolyDADMAC. As a foreign trade enterprise with R&D capabilities, HiSiaddi has repeatedly resolved customized product demands for PolyDADMAC by leveraging technological cooperation with factories and precise market insight. Below is a case illustrating how HiSiaddi addressed customized PolyDADMAC requirements.
For more customized service inquiries, please contact HiSiaddi customer service.
The client is ECOSKIN PARIS, a high-end natural skincare brand based in Paris, France. Its core product lines focus on organic anti-aging, sensitive skin repair and vegan zero-addition formulas. Its products are sold at premium beauty retailers and private custom salons across Southern Europe including France, Italy and Spain. All product lines fully comply with four major compliance frameworks: EU ECOCERT, CosIng, REACH and CPNP, imposing stringent standards on raw material purity, low residue, precise molecular weight control, batch stability and customized parameters.
This project required customized high-purity, low-odor PolyDADMAC (Polyquaternium-6) for three core products: premium repair shampoo, soothing hair conditioner and moisturizing mist. The material needed to deliver outstanding anti-static performance, excellent wet combability, low irritation and high compatibility with plant extracts. The client’s annual procurement volume stood at 1.2 tons, to be delivered in six separate batches. The client previously collaborated with four domestic manufacturers, yet all rejected the project due to inability to match customized molecular weight specifications, excessive odor residues, substandard impurity control and weak small-batch customization capacity. Stuck in a deadlock on customization, the client urgently entrusted HiSiaddi to provide full-chain services covering customized R&D, lab and pilot trials, mass production implementation and compliant delivery.
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Difficulty in Precise Molecular Weight Customization: Conventional products feature broad molecular weight ranges that fail to match formulation rheology requirements The client required strict molecular weight control between 250,000–300,000 Da, whereas standard industrial-grade products have a wide range of 100,000–500,000 Da with severe fluctuations. This targeted molecular weight window balances anti-static efficacy, wet combability and formulation viscosity stability. Most domestic manufacturers operate fixed molecular weight production lines lacking precise polymerization regulation technology; small-batch customization demands equipment re-calibration, leading to high costs and low willingness to accept orders.
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Stringent Odor & Residue Control: Low-odor requirements for cosmetic-grade materials, with conventional products carrying pungent odors Premium hair care products demand non-irritating odor and no residual monomer smell. Residual DADMAC monomers and decompositions from initiators generated during PolyDADMAC production cause sharp ammonia odors. The client mandated monomer residue ≤50 ppm and odor grade ≤Level 1 (odor-free). Most manufacturers adopt simplistic post-treatment processes that only meet industrial-grade standards (monomer residue ≤500 ppm with mild odor), failing to satisfy low-odor requirements for high-end cosmetics.
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Rigorous Purity & Impurity Control: Zero tolerance for heavy metals, microorganisms and by-products As cosmetic raw materials that directly contact human skin, the product must meet EU CosIng and ECOCERT organic certification standards: heavy metals (Pb, As, Hg) ≤1 ppm, total aerobic microbial count ≤10 CFU/g, formaldehyde-free and free of organic solvent residues. Conventional manufacturers adopt low standards for raw material purification, production environment and post-filtration, resulting in large batch-to-batch impurity fluctuations that prevent passing EU organic testing.
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Slow Response to Small-Batch Customization: Factories prioritize large orders, leading to long lead times and inflated costs for custom batches The client’s annual procurement volume of only 1.2 tons with a single batch size of 200 kg qualifies as high-end small-batch customization. Major domestic manufacturers focus on orders of 5 tons and above. Small-batch customization requires re-adjusting polymerization parameters, full production line cleaning and dedicated quality inspection, often entailing lead times exceeding 45 days and price surcharges of 30%–50%, which the client could not accept.
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Unknown Formulation Compatibility: Poor compatibility with plant extracts in standard-grade products The client’s formulations contain active plant ingredients including calendula and chamomile extracts plus hyaluronic acid. The PolyDADMAC must avoid reacting with anionic plant components, prevent degradation of active ingredients and maintain product transparency. Standard industrial-grade PolyDADMAC suffers from unstable charge density and high impurity levels, prone to flocculation with plant extracts that causes cloudiness and phase separation in finished products.
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HiSiaddi assembled a dedicated team of polymer polymerization R&D specialists, cosmetic formulation engineers, EU compliance experts and production process technicians, partnering with two domestic factories qualified for high-end PolyDADMAC customization. We adopted a six-stage workflow: Demand Disassembly → Formulation Design → Lab Trial Verification → Pilot Scale-Up Optimization → Mass Production Implementation → Compliant Delivery, completing the full customization process within 28 days and delivering the first 200 kg batch successfully.
Precision Technical Parameter Definition: We coordinated with the client’s R&D team to finalize 9 core customized indicators and issue a bilingual Technical Specification (TS):
· Molecular weight: 250,000–300,000 Da (±10,000 Da)
· Solid content: 35% ±0.5% (standard 40%, optimized to match hair care formulation viscosity)
· Viscosity (25℃): 3,000–4,000 mPa·s
· Monomer residue: ≤50 ppm
· Odor grade: Level 1 (odor-free)
· Heavy metals: Pb/As/Hg ≤1 ppm
· Microorganisms: Total aerobic microbial count ≤10 CFU/g, no mold or yeast detected
· pH value (1% aqueous solution): 6.0–7.0
· Compatibility: Stable with 5% calendula extract and 3% hyaluronic acid, no phase separation or cloudiness within 48 hours
Clarified Compliance Requirements: Confirmed required documents including REACH pre-registration certificate, CosIng filing certificate, ISO 22716 GMP certificate, English COA/SDS/TDS and ECOCERT organic certification.
Fixed Delivery Terms: Single batch size of 200 kg, delivery across six batches, first batch shipped within 28 days, packaging in 25 kg food-grade light-proof PE drums with full English labels.
Optimized Polymerization Formulation:
1. Monomer Purification: Adopt acetone recrystallization + activated carbon adsorption to raise DADMAC monomer purity from 95% to 99.5%, cutting impurities and odor sources at the root.
2. Initiator System: Replace traditional high-temperature initiators with composite low-temperature ammonium persulfate (APS) + sodium bisulfite (SBS) initiators to reduce side reactions, lower monomer residues and inhibit odor generation.
3. Molecular Weight Regulation: Precisely control polymerization degree via initiator dosage, reaction temperature (65℃±2℃), reaction duration (5 hours) and nitrogen shielding to lock molecular weight within the 250,000–300,000 Da range.
Upgraded Post-Treatment Processes:
1. Vacuum Deodorization: 2-hour vacuum devolatilization at 80℃ and -0.09 MPa to fully remove residual monomers and odor-causing substances, reducing odor grade to Level 1.
2. Precision Filtration: Dual filtration via 0.22 μm ultrafiltration membranes and activated carbon columns to eliminate trace impurities, heavy metals and microorganisms, meeting organic cosmetic-grade purity standards.
Compatibility Formulation Tuning:
1. Adjust charge density to 1.0 meq/g to match anionic charges of plant extracts and prevent flocculation.
2. Optimize pH to 6.5, aligning with the stability window of plant active ingredients; 48-hour compatibility tests show no cloudiness or phase separation.
Lab trial scale: 5 L reactor simulating mass production processes with 3 parallel test rounds. Testing items per round: 8 indicators including molecular weight, viscosity, solid content, monomer residue, odor, heavy metals, microorganisms and compatibility.
Iteration Optimization Records:
· Round 1: Monomer residue 120 ppm with mild odor → extend vacuum deodorization to 2 hours
· Round 2: Molecular weight 320,000 Da → reduce initiator dosage by 5%
· Round 3: All indicators fully compliant, optimal process parameters locked
Deliverables: 5 kg lab trial samples, English lab trial report, full test data and process parameter sheet, formally approved by the client’s R&D team.
Pilot scale: 500 L reactor running per lab trial parameters for scaled production. Process control: Full nitrogen shielding, real-time temperature/pressure monitoring and online viscosity testing to guarantee process consistency. Quality inspection: Full re-test of all indicators for pilot products, with three parallel batches tested to verify inter-batch consistency. Compatibility confirmation: Client on-site testing of pilot samples with calendula extract and hyaluronic acid yielded fully compliant results.
Deliverables: 50 kg pilot samples, English pilot trial report, batch stability dataset and production SOP, signed off by the client for mass production approval.
Priority production scheduling at partner factories: Dedicated production line cleaning, exclusive production teams and full-time quality tracking. Mass production execution: Manufacture of 200 kg in strict accordance with pilot SOPs with precise control of reaction temperature, duration and initiator addition.
Three-Tier Quality Inspection:
1. Workshop self-inspection: Viscosity, pH and solid content sampled every 2 hours
2. QC department re-inspection: Full testing of all 9 core indicators plus microbial and heavy metal analysis on finished goods
3. HiSiaddi third-party sampling: Testing by CMA/CNAS accredited authoritative institutions with English test reports issued
Packaging & Labeling: 25 kg food-grade light-proof PE drums affixed with full English GHS labels listing INCI name, batch number, production date, shelf life, REACH filing number and EU OR information.
Deliverables: 200 kg customized PolyDADMAC, full set of English compliance documents (COA/SDS/TDS), third-party test reports and certificate of origin.
Compliance Document Compilation: Consolidate REACH pre-registration certificate, CosIng filing certificate, ISO 22716 certificate, ECOCERT organic certification and batch traceability records into a unified English compliance archive. Customs Clearance & Logistics: Arrange cold-chain logistics (≤25℃ to avoid viscosity fluctuations), support export customs declaration and EU import clearance with full logistics tracking. Technical Training & Empowerment: Supply a customized PolyDADMAC application guide covering recommended dosage (1%–3%), compatibility precautions, storage conditions and troubleshooting protocols; train the client’s internal teams on raw material testing and quality control standards. Long-Term Customization Guarantee: Sign exclusive supply agreements with manufacturers to lock production schedules for six batches, stable pricing and quality compensation clauses, ensuring subsequent delivery lead times ≤25 days.
1. Customized Product Fully Compliant with Exceeded Performance Expectations The first 200 kg batch of customized PolyDADMAC passed testing by both the client and EU third-party labs, with all indicators 100% meeting customized specifications:
· Molecular weight: 273,000 Da (target range: 250,000–300,000 Da)
· Monomer residue: 32 ppm (target ≤50 ppm)
· Odor: Odor-free (Level 1)
· Compatibility: Stable with plant extracts, fully transparent for 48 hours
· Heavy metals & microorganisms: Undetected, complying with EU organic standards
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37% Shorter Delivery Lead Time, Costs Contained Within Client Budget The client originally anticipated a minimum lead time of 45+ days for customization, while HiSiaddi delivered the first batch in only 28 days, cutting lead time by 17 days (37%). Through process optimization and coordinated factory bulk customization, we applied a price surcharge of merely 12%—far below the industry standard 30%–50% markup—keeping costs within the client’s budget.
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Successful New Product Launch with Excellent Market Feedback The client integrated the customized PolyDADMAC into premium repair shampoo, soothing conditioner and moisturizing mist lines. The finished products deliver mild low-irritation performance, superior wet combability, silky luminous hair and compatibility with sensitive skin. Within the first month of launch, sales exceeded EUR 150,000, earning a nomination for "Best Sensitive Skin Hair Care Product of the Year" from French beauty magazine Beauty Elite.
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Deep Long-Term Strategic Cooperation as Exclusive Custom Supplier The client entrusted HiSiaddi with all Chinese customized procurement for PolyDADMAC and other premium cosmetic raw materials. Its 2026 PolyDADMAC procurement volume increased to 3 tons. The client also commissioned HiSiaddi to customize additional cosmetic raw materials including Polyquaternium-7 and polyglycerol fatty acid esters. Furthermore, the client referred HiSiaddi to three other premium French skincare brands, supporting HiSiaddi’s expansion into the European high-end cosmetic market.
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High Client Recognition, Establishing Industry Customization Benchmark Quote from the Client’s French R&D Director: "ECOSKIN sets near-unattainable standards for raw materials, and every manufacturer we initially contacted turned us down, unable to fulfill our customization requirements. HiSiaddi combines expertise in polymer polymerization, extensive cosmetic formulation experience and efficient project execution to not only meet every single customized specification precisely, but also shorten lead times and control costs. They are far more than a simple supplier—they are our technical partner and a benchmark for high-end chemical customization in China."
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For overseas mid-to-high-end cosmetic brands sourcing PolyDADMAC (Polyquaternium-6), core pain points revolve around customization capacity, purity control, low residual content, odor optimization and plant extract compatibility. Most domestic manufacturers prioritize mass production over custom orders, lacking precise polymerization regulation technology, advanced post-treatment processes, cosmetic-grade quality standards and responsive small-batch customization capabilities, making them unable to satisfy stringent requirements of high-end clients.
HiSiaddi delivers core value through an integrated three-dimensional solution framework: Technology + Resources + Services
1. Technical Strength: Mastery of PolyDADMAC polymerization mechanisms and five core technologies including monomer purification, low-temperature initiation, precise molecular weight regulation, vacuum deodorization and precision filtration to meet high-end cosmetic-grade customization standards.
2. Resource Integration Capacity: Partnerships with certified manufacturers specializing in high-end customization enable dedicated scheduling, exclusive QC and tailored services, resolving long lead times and inflated costs for small-batch custom orders.
3. Full-Chain Service Capacity: One-stop services spanning demand disassembly, formulation design, lab/pilot trials, mass production, compliant delivery and technical empowerment; provision of full English documentation and EU compliance support with technical training to eliminate cross-border cooperation barriers.
4. Risk Control Capacity: Three-tier inspection, third-party testing, full batch traceability and quality compensation clauses guarantee zero-defect customized products with zero compliance risks to ensure smooth new product launches for clients.
For overseas mid-to-high-end cosmetic brands sourcing PolyDADMAC and other fine chemical raw materials from China, selecting a foreign trade partner with advanced customization technical capabilities, full-chain service experience and EU compliance certifications is critical to realizing exclusive raw material customization, guaranteeing product quality, accelerating market access and expanding premium market share. Equipped with customization technology, professional services and a global vision, HiSiaddi stands as the preferred customized supply chain partner for overseas high-end cosmetics, pharmaceuticals and green beauty clients.
For more customized service inquiries, please contact HiSiaddi customer service.
+86-13120989737 
info@hisiaddi.com 
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