1.1 Basic definitions

Nakamura Polished Silica, a cosmetic-grade functional additive manufactured through gradient grinding and airflow classification technology, features uniformly white granular particles. Characterized by its rounded irregular particle structure with precisely controlled size and hardness, it delivers gentle exfoliation without reacting with surfactants, plant extracts, or other cosmetic components. This core ingredient serves as the essential functional substance in facial cleansers, exfoliating scrubs, and similar dermabrasive products.

1.2 Core values

As a key carrier for exfoliation efficacy in cosmetics, Zhongqi Silica Powder effectively addresses industry pain points of traditional abrasive particles (such as walnut shell powder and polyethylene beads), including sharp edges that may irritate skin and poor biodegradability causing environmental pollution. By adjusting particle size and smoothness to meet exfoliation needs for different body parts like face and body, it maintains stable chemical properties compatible with various functional ingredients. The product complies with the "Cosmetic Safety Technical Specifications", providing a safe and efficient exfoliation solution for mid-to-high-end abrasive cosmetics.

Product Characteristics

2.1 Structural and performance advantages
•Precision friction control: the particle size gradient distribution is achieved by using airflow classification technology, with a Mohs hardness of 7. There is no risk of scratch after skin friction test, and the exfoliation rate can reach 35-50% without damage to the new skin.
•Excellent compatibility performance: pH value of 6.0-8.0, excellent compatibility with amino acid surfactant, nicotinamide, fruit acid and other components, the mixture does not affect the stability of the system; whiteness of more than 95%, suitable for all kinds of skin color of abrasive products, no risk of pigment migration.
•Environmentally friendly characteristics: processed from natural quartz, can be naturally degraded, replace plastic microbeads in line with the requirements of the EU cosmetics plastic restriction order, and have no harm to aquatic life after ecological toxicity test.

2.2 Process assurance
The production process employs precision techniques involving natural quartz processing through crushing, acid washing purification, and jet mill grinding. By precisely controlling grinding duration and classification air velocity, the system achieves particle size distribution deviation ≤±5μm. The manufacturing process incorporates silane coupling agent surface modification to enhance oil phase wettability and prevent particle agglomeration. Vacuum drying technology is implemented to ensure moisture content remains below 5%, effectively preventing storage-induced clumping. Each batch undergoes laser particle size analysis and skin irritation testing to guarantee stable and controllable performance characteristics.

Key technical parameters (KTP)

Application fields

4.1 Facial scrub facial cleanser
•The amino acid type saponified facial cleanser can deeply remove dead keratin and oil residue from the pores. The pore diameter can be reduced by 15-20% after 4 weeks of use according to the test, and there is no redness phenomenon after 30 people's sensitivity test.

4.2 Body scrub
•Used for body care products such as sea salt abrasive cream, it can remove keratin accumulation in elbows, knees and other areas. When used with moisturizing ingredients, skin roughness can be reduced by more than 40%, and it is compatible with shower base without delamination problem.

4.3 Exfoliating masks
•Suitable for sludge exfoliating masks, sensitive skin model with gentle friction and adsorption function, can improve the cleaning power of the mask, at the same time, adsorbed dirt in the pores, after use, skin transmittance increased by 10-15%.

Recommended dosage

 Product Advantages

•Precise classification and adaptation: the models are subdivided according to body parts and skin texture, and the particle size gradient is controllable to meet the needs of exfoliation in all scenarios, so as to avoid skin damage caused by "one size fits all".
•Excellent safety performance: smooth particle shape reduces the risk of skin scratches, sensitive skin test suitable for all skin types, children's sanding products can also be used safely.
•Good environmental compatibility: it can be naturally degradable to replace plastic microbeads, meet the requirements of environmental protection policies, and help brands practice the concept of sustainable development.
•Batch stability and reliability: the airflow classification technology guarantees the uniform particle size, the friction performance deviation between batches is less than 5%, suitable for large-scale cosmetics production.

Factory advantages

Zhongqi Guangdong Silicon Materials Co., Ltd., a national high-tech enterprise and provincial-level specialized, refined, unique, and innovative enterprise, has been dedicated to the industry for over two decades. The company holds 17 patented technologies and operates a GMP-certified production base. Equipped with advanced testing instruments including atomic fluorescence spectrometers and laser particle analyzers, it has established a comprehensive quality control system comprising 26 inspection processes from raw materials to finished products. The company has obtained ISO22000 certification for food safety management systems.

Frequently asked questions

•1. Q: What is the core function of frosted silica?
•A: It is mainly used as a abrasive agent to provide gentle and efficient physical friction, which can be used to remove surface aging keratin or stains, and has some thickening and anti-clumping functions.
•2. Q: What is the difference between it and ordinary silica in application?
•Answer: Ordinary silica focuses on anti-cling and flow aid; frosted type focuses on clean frosted scene because of its special particle morphology, such as frosted cream, body lotion, etc.
•3. Q: Does using abrasive silica damage the surface of objects or skin?
•A: No. The particles are moderately hard and rounded, and can be adapted to different scenarios by controlling the particle size to achieve a frosted effect while avoiding scratches.
•4. Q: Can frosted silica be in direct contact with the human body?
•Answer: Those that meet the food additive standards (such as China GB 25576) can be directly contacted with the body.
9. Qualifications and Honours
•FSSC22000
•ISO22000：2018
•ISO9001：2015
•SHC HALAL
•OU  KOSHER
•FDA attestation 
•FAMI-QS
•SEDEX
•Food additive production license
•Feed additive production license
•National high-tech enterprise
•Specialized, refined and new enterprises in Guangzhou
•17 patents from the State Intellectual Property Office