Frequently Asked Questions

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About Company

We are a 100% direct, factory-owned manufacturer. Cinoll operates its own 20,000+ m² production facility in Guangdong, China, equipped with 100,000-class (ISO 8) cleanrooms and fully automated filling lines dedicated to our three core product categories: toothpaste, mouthwash, and mouth spray. We do not outsource production to any third party. By working directly with us, you eliminate middleman markups, gain direct access to our R&D chemists, and maintain strict quality control over every single batch — whether you are launching a whitening toothpaste, an antibacterial mouthwash, or a portable breath-freshening mouth spray.

We hold ISO 22716 (GMP for cosmetics), ISO 13485, FDA facility registration, CE, SGS, MSDS, CPSR, RoHS, and SEDEX 4P ethical audit certification. These certifications cover our full product range, including toothpaste (whitening, sensitivity, natural, nHA), mouthwash (antibacterial, alcohol-free, fluoride), and mouth spray (breath-freshening, CBD-infused, herbal) and more other products. Our products can also be certified to meet additional requirements your target market demands — including Leaping Bunny (cruelty-free). View our full certifications list at  View Certifications

Absolutely. We welcome brand owners to visit our facility in China at any time. During a factory visit, you can observe our dedicated toothpaste filling lines, our mouthwash bottling and capping equipment, and our mouth spray pump-filling stations — all operating within our GMP-certified cleanroom environment. If you are based in the US and cannot travel, we fully support third-party factory audits conducted by internationally recognized agencies such as SGS, Intertek, or Bureau Veritas.

Cinoll was established in 2011, giving us over 13 years of dedicated experience in oral care manufacturing. Our expertise spans all three of our core product categories: toothpaste, mouthwash, and mouth spray. During this time, we have partnered with more than 5,000 brands across 50+ countries — from Amazon FBA sellers and DTC startups to dental clinic chains and national retail chains.

Our primary expertise is manufacturing — specifically toothpaste, mouthwash, and mouth spray. However, we understand that building a complete oral care brand often requires complementary products. If you need accessories such as toothbrushes, floss, or travel kits to bundle with your toothpaste or mouth spray, we can leverage our supplier network to source these on your behalf, consolidate everything into a single shipment, and simplify your supply chain.

R&D and Custom Formulation

Both. We maintain a library of over 200 proven, ready-to-private-label formulas that can be launched quickly and cost-effectively. However, our core strength is custom R&D formulation. Our in-house team of cosmetic chemists can develop entirely unique oral care products tailored to your brand’s specific claims and target market — whether you need a fluoride-free nano-hydroxyapatite (nHA) toothpaste, an alcohol-free antibacterial mouthwash, a PAP+ whitening gel, a portable breath-freshening mouth spray, or a sensitivity-relief formula with potassium nitrate.

Every custom formula undergoes a rigorous, multi-stage testing protocol in our in-house laboratory before any mass production begins:
Microbial Testing (ISO 21149): Verifies that the preservative system is effective against bacteria, yeast, and mould.
Heavy Metal Analysis (ICP-MS method): Confirms that lead, arsenic, mercury, and cadmium levels are within EU Cosmetics Regulation (EC 1223/2009) and FDA limits.
Stability Testing (ICH Q1A protocol): Accelerated aging studies at 40°C / 75% relative humidity to confirm a minimum 24–36 month shelf life.
pH and Viscosity Testing: Conducted on every production batch to ensure consistent texture, mouthfeel, and safety.
Compatibility Testing (ISO 22715): Ensures the formula does not chemically react with or degrade your chosen packaging material.

Yes. If you have a benchmark product you want to emulate or improve upon, our chemists can analyze the INCI ingredient list and physical properties to develop a comparable or superior formulation — while ensuring we do not infringe on any active patents. We frequently help US brands upgrade their existing formulas for better clinical efficacy, a cleaner ingredient profile, or improved sensory experience (texture, flavor, foam).

Our standard R&D timeline is 7 to 15 days from the date we receive your complete product brief. This includes formula development, initial lab testing, and production of physical samples for your review. For formulas based on our existing library, we can often deliver samples within 7 to 10 days. Complex custom formulations requiring novel active ingredient combinations may take up to 30 days.

Yes, and we take intellectual property protection very seriously. Before you share any proprietary designs, branding, or formulation concepts, we are happy to sign an NNN (Non-Disclosure, Non-Use, Non-Circumvention) Agreement governed by Chinese law. This provides stronger legal protection for foreign buyers than a standard US NDA, as it is directly enforceable in Chinese courts. Your custom formulas, packaging designs, and brand assets are strictly confidential and will never be shared with or disclosed to any other client.

Products & Customization

Our three flagship product categories are toothpaste, mouthwash, and mouth spray — areas where we have invested most deeply in R&D capability, production equipment, and formula libraries. Beyond these three, we also manufacture teeth whitening gels and strips, whitening powder, dental floss, and other oral hygiene accessories. If you are building a complete oral care line, we can serve as a single-source manufacturer for your entire product range.

Yes — everything is customizable. We offer comprehensive private label and OEM/ODM services covering formula, flavor, color, texture, packaging format (tube, pump, bottle, sachet), packaging material (PE, aluminum laminate, kraft, PET, glass), label design, and outer box design. Our in-house design team can create retail-ready packaging from scratch based on your brand guidelines, or work from your existing design files.

Our standard MOQ for fully customized formulas with custom-printed packaging is 5,000 to 10,000 units per SKU. This threshold allows us to run our automated filling lines efficiently and secure the best raw material pricing for you. For standard off-the-shelf formulas with basic label customization, we can sometimes accommodate lower MOQs — particularly for startups or initial market-testing orders. Contact us to discuss your specific requirements.

We support a wide range of packaging formats and materials to suit any retail or DTC channel:
Tubes: PE (polyethylene), aluminum laminate, kraft paper, and recyclable bio-based materials — ideal for toothpaste and gels.
Bottles: PET, HDPE, and glass with flip-cap, pump dispenser, measuring cap, or child-resistant cap options — used for mouthwash, serums, and liquid formulas.
Spray bottles: Fine-mist pump or pressurized aerosol in PET or aluminum — for mouth spray and other on-the-go formats.
Outer boxes: Folding cartons, rigid gift boxes, windowed drawer boxes, and eco-friendly kraft boxes.
All packaging can be printed with up to 8 colors using offset or digital printing, with options for matte/gloss lamination, spot UV, foil stamping, and embossing.

Our standard mass production lead time is 25 to 35 days from the date of final artwork approval and deposit receipt. This is significantly faster than the industry average of 45 to 60 days, because we control the entire production process in-house — from raw material procurement to filling, labeling, and final QC inspection. Rush production is available for select products; contact us to discuss your timeline.

Quality Control & Certifications

We follow a rigorous, multi-stage quality control process aligned with ISO 22716 GMP standards and Six Sigma quality principles:
Incoming Quality Control (IQC): 100% inspection of all raw materials and packaging components upon arrival, with COA verification against specification.
In-Process Quality Control (IPQC): Continuous monitoring of pH, viscosity, fill weight, and seal integrity during production.
Outgoing Quality Control (OQC): AQL 1.5 final inspection of finished goods before shipment, including visual inspection, label accuracy, and functional testing.
Our defect rate is consistently below 0.3%, which is comparable to European pharmaceutical manufacturing standards.
Every order is accompanied by a comprehensive documentation package, including:
Certificate of Analysis (COA) for each batch
Safety Data Sheet (SDS / MSDS)
INCI ingredient list (in English)
Stability test report
Microbial test report
Heavy metal test report
GMP compliance declaration
Packing list and commercial invoice
Additional regulatory documents (CPSR for EU, FDA facility registration certificate, Leaping Bunny certificate, etc.) are available upon request.

US Market & FDA Compliance

Yes. We have extensive, hands-on experience manufacturing all three product categories for the US market. The regulatory classification determines the compliance pathway:
Toothpaste: Fluoride-free toothpaste (nano hydroxyapatite, charcoal, whitening) is classified as a cosmetic under MoCRA. Fluoride toothpaste and potassium nitrate sensitivity toothpaste are OTC drugs regulated under 21 CFR Part 355 (anticaries) and 21 CFR Part 356 (oral health care). We manufacture both and will guide you through the appropriate compliance pathway.
Mouthwash: Cosmetic mouthwash (breath-freshening, whitening) is regulated as a cosmetic. Antibacterial mouthwash (containing cetylpyridinium chloride or essential oils at therapeutic levels) may be classified as an OTC drug under 21 CFR Part 356. We manufacture both and advise on the correct classification for your specific formula.
Mouth Spray: Most breath-freshening mouth sprays are classified as cosmetics. Functional mouth sprays with therapeutic claims (e.g., dry mouth relief, antibacterial) may require OTC drug classification. We will advise you on the correct regulatory pathway based on your intended claims.
We provide all documentation required for US customs clearance, including Certificate of Analysis (COA), Safety Data Sheets (SDS), and full ingredient declarations in English.
No — provided the product is correctly classified and documented. We export all three product categories to the US regularly and are fully familiar with the documentation requirements of US Customs and Border Protection (CBP) and the FDA. We ensure your commercial invoices, packing lists, ingredient declarations, and product labeling all meet US import requirements. For OTC drug products (such as fluoride toothpaste or antibacterial mouthwash), we will advise you on FDA Prior Notice requirements and NDC (National Drug Code) registration. And we also have DDP shipping to USA too.
Yes. Many of our clients are Amazon sellers who sell all three product categories. We are fully experienced with Amazon FBA inbound shipment requirements for liquids (mouthwash, mouth spray) and pastes (toothpaste). We can:
Print and apply FNSKU labels to individual product units.
Apply Amazon-compliant carton labels with shipment IDs.
Ensure liquid products (mouthwash, mouth spray) are properly sealed and compliant with Amazon’s liquid product requirements to prevent leakage claims.
Arrange DDP (Delivered Duty Paid) shipping via sea freight (LCL or FCL) or air freight, delivered directly to your designated Amazon fulfillment centers in the United States.