1.1 Basic definitions
Zhongqi Foot Powder Silicon Dioxide, a cosmetic-grade functional additive developed through an optimized precipitation-sol-gel process, appears as a white, ultra-fine, fluffy powder. Its core feature lies in its high specific surface area porous structure, which combines rapid moisture absorption with antibacterial component support. This non-reactive ingredient remains unaffected by active foot care components like zinc oxide, menthol, and Sophora flavescens extract, making it the essential functional raw material for antifungal powders and foot care products.

1.2 Core values
As a "moisture-absorbing and antibacterial dual-effect additive" in foot care products, Zhongqi Foot Powder utilizes silica to effectively address industry pain points of traditional powders (such as talcum powder), including slow moisture absorption, easy clumping, and rapid loss of antibacterial components. By regulating pore structure and surface characteristics, it achieves rapid sweat absorption within 30 seconds while stably loading antibacterial ingredients for sustained release, extending product efficacy. This provides a safe and efficient functional solution for mid-to-high-end foot care products.

Product Characteristics

2.1 Structural and performance advantages
•High efficiency of moisture absorption: BET specific surface area is up to 180-250m²/g, the porous structure forms a strong capillary adsorption force. Under the condition of 25℃ and relative humidity of 80%, the moisture absorption rate is more than 35% in 1 hour, and the moisture absorption saturation can reach 60% of its own weight in 24 hours. Moreover, it remains loose after moisture absorption without lumping phenomenon.
•Antimicrobial carrier function: The surface silanol group (-SiOH) can be combined with antibacterial components such as zinc oxide and terbinafine hydrochloride through hydrogen bond to achieve a loading rate of more than 90%, and realize slow release for 72 hours, so that the antibacterial effect on feet continues to improve, and the inhibitory rate (against Candida albicans and Staphylococcus aureus) reaches more than 99%.
•Excellent use experience: average particle size 5-15μm, powder bulkiness ≥8mL/g, smooth texture when applied, no rough granular feeling; whiteness ≥97%, suitable for all kinds of skin color foot powder products, no pigment migration risk, and a slight slippery sensation to reduce foot friction discomfort.

2.2 Process assurance

The process utilizes a two-stage neutralization reaction between sodium silicate and dilute sulfuric acid, with precise control of temperature, pH (7.0-8.0), and aging duration to establish a uniform porous structure. Supercritical CO₂ drying technology is integrated during production to preserve pore integrity, effectively preventing structural collapse caused by conventional drying methods. Air jet pulverization and classification ensure particle size distribution deviation remains within ±1μm. Each batch undergoes rigorous testing including moisture absorption rate analysis and antimicrobial component loading rate evaluation, guaranteeing stable and controllable product performance.

Key technical parameters

Application fields

4.1 Jiegua powder products
•The antifungal powder containing terbinafine hydrochloride and sophora flavescens extract can quickly adsorb foot sweat, stabilize the load of antibacterial components, and have no skin irritation reaction.

4.2 Daily care of foot powder
•Used for ordinary foot care and powder, with moisture absorption and smooth function, can keep the feet dry for more than 8 hours, combined with menthol ingredients can also bring a cool feeling, relieve foot fatigue, suitable for daily commute, home and other scenarios.

4.3 Sports foot powder products
•Suitable for post-exercise special foot powder, the rate of moisture absorption is fast, the rate of moisture absorption is more than 36% in 1 hour, can quickly absorb a large amount of sweat on the feet after exercise, prevent bacterial breeding and odor, reduce the friction of sports shoes, reduce the risk of foot wear.

Recommended dosage

The above is for reference only, and the specific formula and actual test are determined

Product Advantages

•Dual-function integration: it has the functions of moisture absorption and antibacterial carrier, reduces the type of auxiliary materials in the formula of foot powder, simplifies the production process and reduces the cost of enterprises.
•Precise scene adaptation: subdivided models according to foot care, daily care and sports care to meet different foot needs and improve product pertinence.
•Safe and reliable performance: ultra-fine particle size and mild characteristics are suitable for sensitive skin of the foot. It has been tested rigorously and safely, and there is no risk of irritation after long-term use.
•Sustained efficacy: high load rate and slow release of antibacterial components, no lump after moisture absorption, ensure long-term and stable effect of the product.

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, while also having 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 in direct contact with the body.

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