Basic Information of Kaolin
- Product Name: Kaolin
- Synonyms: White Clay, Porcelain Clay, White Earth, Kaolin Powder, Kaolinite, White Dolomite
- CAS No.: 1332-58-7
- EINECS: 296-473-8
- Molecular Formula: Al₂O₃·2SiO₂·2H₂O
- Molecular Weight: 258.16 g/mol
What is Kaolin?
Kaolin, a silicoaluminate clay mineral, features a two-dimensional sheet-like porous structure primarily composed of silicon-oxygen tetrahedra and aluminum-oxygen octahedra, endowing it with excellent adsorption and cleaning capabilities. It is preferably sourced from raw ore with low heavy metal content, processed through impurity selection, high-temperature sintering, and ultrafine crushing. The product boasts advantages such as high whiteness, high purity, low heavy metals, and good plasticity, making it a commonly used high-quality material for clay facial masks.
Why choose Highassay?
Highassay is a professional kaolin supplier from China, specializing in high-purity cosmetic-grade kaolin.
We provide complete quality inspection documents including COA and MSDS, and support sample testing as well as customization on particle size and whiteness.
Our cosmetic-grade kaolin features high whiteness, fine and smooth texture, strong oil and dirt adsorption capacity, while being mild and non-irritating. Compared with industrial-grade kaolin, it has lower heavy metal content, qualified microbial indicators, and no gritty feeling.
Choose Highassay for your cosmetic-grade kaolin. Every gram of our raw material stands up to strict testing, so you can purchase with confidence.
Packaging and Storage of Kaolin
Package:Kaolin’s regular package is 25kg / bag,use a PP woven bag with a PE inner liner for moisture and dust protection.Larger packaging sizes, such as 500 kg and 1,000 kg, are also available upon request.
Storage:Store in a cool, dry, and well-ventilated place.You need to store it in a sealed container,too.Once opened, use as soon as possible.
What is Cosmetic-grade Kaolin used for?
Cosmetic-grade Kaolin features high purity and excellent physicochemical properties, thereby occupying an extremely important position in cosmetic formulations. It is widely used in oil-controlling, cleansing, and powder makeup products.
- Mud masks: Acts as a base to absorb deep-seated dirt and excess oil.
- Facial cleansers: Provides gentle cleansing and a fresh, non-greasy feel.
- Hair & scalp care: Helps absorb excess scalp oil for a thorough cleansing effect.
- Liquid foundation, pressed powder: Improves coverage, smoothness, and matte finish.
- Loose powder & setting powder: Sets makeup and absorbs facial oil.
- Eyeshadow & blush: Serves as a powder base to enhance pressing uniformity and adhesion to skin.
- Toothpaste: Used as a mild abrasive to assist in cleaning tooth surfaces.
Specification Sheet of Kaolin
- Specification of Kaolin
| Items | Average Particle Size(um) | Application Features |
| KL-2500 | 5±2μm | 2500 mesh, high whiteness, ultra-fine particle size, and low heavy metal content. Its powder compressibility and plasticity are excellent, making it very suitable as a filler for pressed powder cosmetics; calcined KL-2500 has great adsorption and cleansing effects, making it suitable for products like facial masks and clay masks. |
| KL-5000 | 3±2μm | high whiteness, ultra-fine particle size, and low heavy metal content. Its powder compressibility is excellent, making it very suitable as a filler for compact-type cosmetics; calcined KL-5000 has great adsorption and cleansing effects, making it ideal for masks, clay masks, and similar products. |
| KL-7000 | 4±2μm | Ultra-fine particle size, and low heavy metal content. Its powder compressibility is excellent, making it verysuitable as a filler for compact-type cosmetics; making it ideal for masks, clay masks, and similar products. |
The MOQ for our cosmetic-grade kaolin products is 1 ton; we also support small-batch sampling and orders.
MOQ can be flexibly adjusted to accommodate varying requirements regarding purity, specifications, and packaging.
Whether you require samples for testing or wish to make a bulk purchase, you are welcome to contact us directly; we will provide a suitable procurement solution tailored to your specific application scenarios.
Small to medium-batch orders are in stock and available for immediate shipment.
Large-volume orders require 3–7 business days for preparation; we will arrange for shipment as soon as possible after confirming the order.
Different grades,such as cosmetic, pharmaceutical, agricultural, and industrial grades, exhibit significant price variations due to differences in purification processes and impurity control standards.
The specific quotation depends on your purchasing tier, quantity, and customization requirements. Please contact us to obtain the latest quote.
Agriculture: Kaolin can be sprayed onto the surfaces of leaves and fruits to form a physical barrier, serving to protect against pests and sunburn while enhancing fruit quality.
Pharmaceuticals: Kaolin can serve as a pharmaceutical excipient, enhancing the stability, solubility, and processability of drug formulations.
Industry: Kaolin is widely utilized in sectors such as ceramics, papermaking, rubber and plastics, and coatings, leveraging its plasticity, whiteness, and chemical inertness to optimize product performance.
Yes, Kaolin clay offers our skin multiple physical benefits, primarily including deep cleansing, oil absorption, and gentle exfoliation.
No. Cosmetic-grade Kaolin is our flagship product, but we also offer pharmaceutical-grade, agricultural-grade, and industrial-grade Kaolin.
Please let us know your specific industry, and we will recommend the most suitable tier.
Physicochemical Properties of Kaolin
- Appearance: White or off-white powder; fine and fluffy
- Density: 2.60 g/cm³
- Bulk Density: 470 kg/m³
- Melting Point: Approx. 1750°C
- Solubility in Water: Insoluble
- Chemical Stability: Insoluble in water, cold acids, and alkalis
Selection Guide for Cosmetic-Grade Kaolin
Verification Standards and Certification
Highassay’s cosmetic-grade kaolin meets industry standards, with particularly rigorous controls regarding impurity levels.Detailed data can be found in the parameter table below. If you require test reports (COA, MSDS) for other corresponding batches, please contact us to request them.
Cosmetic Grade Kaolin Specifications
| Index | Cosmetic Grade Requirement | Compliant |
| Whiteness | ≥90% (Premium grade ≥95%) | Complies |
| D50 Particle Size | 1–15 μm | Complies |
| pH Value | 4.5–8.0 | Complies |
| Moisture | ≤1.0% | Complies |
| Oil Absorption | 40–72 g/100 g | Complies |
| 45 μm Sieve Residue | ≤0.02–0.05% | Complies |
| SiO₂ | 50–55% | Complies |
| Al₂O₃ | 43–47% | Complies |
| Fe₂O₃ | ≤0.39% | Complies |
| Loss on Ignition | 10–12% | Complies |
| Lead (Pb) | ≤40 mg/kg | Complies |
| Arsenic (As) | ≤2 mg/kg | Complies |
| Cadmium (Cd) | ≤5 mg/kg | Complies |
| Mercury (Hg) | ≤1 mg/kg | Complies |
| Total Aerobic Microbial Count | ≤1000 CFU/g | Complies |
| Molds & Yeasts | ≤100 CFU/g | Complies |
| Pathogenic Bacteria | Not detectable | Complies |
Choose the Right Product Type
| Type | Key Advantages | Best For |
| Water-washed Kaolin | Natural skin feel, good compatibility with moisturizing systems | Cleansers, mud masks, moisturizing formulations |
| Calcined Kaolin | Higher oil absorption, whiteness and hiding power | Pressed powder, loose powder, high-oil-control & matte formulations |
Tell me your specific application, and I will recommend the appropriate type of kaolin for you.
Testing Dispersibility
Kaolin exhibits good hydrophilicity and disperses easily in the aqueous phase.But in pure oil or anhydrous formulations (such as some ointments).It may exhibit uneven dispersion or sedimentation.This necessitates the use of additional auxiliaries or an adjustment to the process.
Facing a formulation hurdle on your production line?Contact me,I’ll share actionable recommendations tailored to your process.
Calcined Kaolin VS Washed Kaolin
| Index | Calcined Kaolin | Washed Kaolin | Reason for Difference |
| Whiteness | 92–95%+ | 85–90% | Calcination removes residual organic matter and pigments from the ore, significantly improving whiteness. |
| Oil Absorption | 68–72 g/100 g | 40–50 g/100 g | Calcination forms a porous structure inside particles, increases specific surface area, and greatly enhances oil absorption capacity. |
| pH Value | 4.5–5.5 | 5.0–8.0 | High-temperature calcination changes the chemical properties of the mineral surface, shifting the system to weakly acidic. |
| Hiding Power | Strong | Moderate | After calcination, the crystal structure becomes denser, the refractive index increases, and opacity & hiding power are enhanced. |
| Typical Applications | Powder cake, loose powder, highlighter, eyeshadow and other color cosmetics | Facial cleanser, mud mask, daily cleansing formulations | — |
Kaolin’s Application Scenarios & Recommended Dosage
| Application Type | Recommended Model | Suggested Dosage |
| Powder Pact / Pressed Powder / Loose Powder | KL-2500 / KL-5000 / KL-7000 | 10%–40% |
| Cleansing Mud Mask / Facial Mask | Calcined KL-2500 / KL-5000 | 5%–20% |
| Liquid Foundation / Cushion Foundation | KL-5000 / KL-7000 | 3%–15% |
