In the field of high-efficiency and mild cosmetic active ingredients, Quaternium-73 stands out as a premium anti-acne, antibacterial and skin-conditioning raw material, widely applied in high-end skincare, anti-acne and scalp care formulations. Bericos® PQ73 is our independently developed and produced high-grade Quaternium-73 product. With standardized chemical specifications, powerful skincare efficacy, ultra-high purity and excellent comprehensive stability, it breaks the limitations of ordinary commercial Quaternium-73 products and provides reliable, high-quality raw material support for cosmetic formulation research and development and mass production. This article systematically introduces the core advantages of Bericos® PQ73 from five key dimensions: chemical specification, core efficacy, high-purity characteristics, stability performance, and independent R&D and production strength.

1. Standardized Chemical Specification of Bericos® PQ73

Bericos® PQ73 is a high-precision customized Quaternium-73 cosmetic raw material with complete and standardized chemical indicators, complying with international cosmetic ingredient standards and domestic cosmetic safety specifications. Its core chemical parameters are accurate and stable, laying a solid foundation for consistent product efficacy and formulation compatibility.

The basic chemical information of Bericos® PQ73 is clear and authoritative: INCI name is Quaternium-73, CAS number 15763-48-1, and its chemical systematic name is 3-Heptyl-2-[(3-heptyl-4-methyl-3H-thiazol-2-ylidene)methyl]-4-methylthiazolium iodide. In terms of physical and chemical properties, the product appears as uniform yellow to light yellow crystalline powder with no peculiar odor. The melting point is stably controlled at 224℃–228℃, with extremely low moisture content, and the loss on drying is strictly limited to a maximum of 0.5% to avoid impurity interference caused by moisture absorption.

In terms of solubility, Bericos® PQ73 has excellent formula adaptability: it is easily soluble in common cosmetic solvents such as ethanol, butylene glycol and propylene glycol, slightly soluble in water, and suitable for most aqueous and oily skincare formulations. In addition, the product strictly controls heavy metal residues, with lead content not exceeding 10ppm, fully meeting the safety requirements of global cosmetic raw material standards, and eliminating hidden safety hazards for terminal cosmetic products.

2. Powerful and Professional Efficacy Introduction

Bericos® PQ73 Quaternium-73 is a high-efficiency broad-spectrum antibacterial and anti-acne active ingredient with outstanding core efficacy, far superior to traditional preservatives and anti-acne ingredients in terms of efficacy efficiency and safety. Its core mechanism is to destroy the cell membrane structure of harmful bacteria, inhibit bacterial proliferation and metabolism, and achieve efficient antibacterial, anti-inflammatory and acne-improving effects.

The most prominent advantage of Bericos® PQ73 Quaternium-73 is its ultra-low dosage and high-efficiency efficacy. It has an extreme inhibitory effect on Propionibacterium acnes, the main bacterium causing acne, with a minimum inhibitory concentration (MIC) as low as 0.00002%. In actual cosmetic formulation applications, the conventional addition amount is only 0.001%–0.005%, which can effectively inhibit the activity of acne-causing bacteria, improve inflammatory acne, reduce pore redness and swelling, and prevent repeated acne breakouts. Compared with salicylic acid and plant anti-acne ingredients, it has stronger targeting efficacy and will not cause excessive irritation to the skin.

In addition to anti-acne performance, Bericos® PQ73 Quaternium-73 has broad-spectrum antibacterial activity against common harmful microorganisms such as Staphylococcus aureus and Escherichia coli. It can assist cosmetic formulations in achieving antibacterial and antiseptic effects, replacing part of traditional preservatives, reducing the addition of irritating preservative ingredients, and optimizing the mildness of formulations. At the same time, it can inhibit melanin abnormal precipitation caused by bacterial inflammation, assist in lightening acne marks, and repair damaged acne skin, with multiple effects of anti-acne, anti-inflammation and skin repair. It is widely applicable in anti-acne essence, facial cleanser, toner, scalp anti-dandruff care products and oil-control skincare products.

3. Ultra-High Purity, Low Impurity and Higher Safety

Purity is the core factor determining the efficacy and safety of Quaternium-73 raw materials. Most ordinary Quaternium-73 products on the market have insufficient purity, with more reaction impurities and residual solvents, which easily cause skin irritation, unstable product efficacy and short shelf life. Bericos® PQ73 adopts self-developed high-precision purification and crystallization technology, realizing ultra-high purity production, with the main content stably reaching 99% minimum.

Through multiple recrystallization, filtration and impurity removal processes, Bericos® PQ73 effectively removes intermediate reaction residues, inorganic salts and organic impurities in the production process. The ultra-high purity feature brings two core advantages: first, it ensures stable and efficient active efficacy, avoiding the attenuation of antibacterial and anti-acne effects caused by impurity dilution; second, it greatly improves product safety. The ultra-low impurity content reduces the risk of skin sensitivity, redness and irritation, and can be safely used in sensitive skin anti-acne formulations and long-term daily skincare products.

Moreover, high-purity characteristics make Bericos® PQ73 have better formula compatibility, no adverse reaction with other cosmetic active ingredients (such as hyaluronic acid, niacinamide, plant extracts), no precipitation or discoloration in the formula system, and effectively improve the grade and stability of terminal cosmetic products.

4. Excellent Comprehensive Stability, Adaptable to Diverse Formulation Processes

Cosmetic raw materials need to withstand complex production processes and long-term storage environments, and stability is a key indicator of product practicability. Bericos® PQ73 has been optimized through independent process technology, with excellent thermal stability, pH stability and formula system stability, solving the defect of poor stability of ordinary Quaternium-73 products.

In terms of pH stability, Bericos® PQ73 maintains stable active ingredients and physical properties in the classic cosmetic pH range of 5.5–8.0, covering the pH range of most skincare and hair care products, with no efficacy attenuation or component decomposition. In terms of thermal stability, the product can withstand high-temperature processing up to 90℃, adapting to conventional cosmetic high-temperature dissolving, emulsification and sterilization processes, without decomposition and inactivation during production, and suitable for mass industrial production.

After professional stability testing, Bericos® PQ73 has stable chemical properties under normal storage and transportation conditions. With conventional light-proof and sealed storage, there is no obvious discoloration, deliquescence and efficacy attenuation within the shelf life. Compared with ordinary Quaternium-73 which is prone to photolysis and activity reduction, Bericos® PQ73 optimizes the molecular stability structure through process improvement, significantly improving light stability, ensuring consistent product quality from raw material storage to terminal product shelf life, and bringing long-term stable efficacy to cosmetic products.

5. Independent R&D and In-House Production, Controlled Full-Cycle Quality

Bericos® PQ73 is a core high-performance cosmetic active ingredient independently researched, developed and mass-produced by our company, with completely independent intellectual property rights, breaking the reliance on imported high-purity Quaternium-73 raw materials. Our professional cosmetic ingredient R&D team has optimized the traditional synthesis process after hundreds of formula experiments and process iterations, successfully developing a green, efficient and low-consumption production process for high-purity Quaternium-73.

In terms of production, we have built a standardized dust-free production workshop and a complete set of precision production and purification equipment, realizing full-process independent control from raw material feeding, synthetic reaction, purification and crystallization to finished product packaging and testing. Different from the decentralized processing of traditional manufacturers, our integrated production mode can precisely control each production link, effectively avoid quality fluctuations caused by external processing links, and ensure the batch stability of Bericos® PQ73 products.

At the same time, we have established a strict full-quality inspection system. Each batch of Bericos® PQ73 will undergo strict testing including purity detection, impurity analysis, stability verification and microbial detection before leaving the factory, with complete test reports. Independent R&D and production not only ensure the product’s high performance and high stability but also realize flexible customization of indicators and stable supply capacity, which can meet the personalized formula needs of different cosmetic enterprises and provide cost-effective high-end raw material solutions for the market.

Conclusion

As a self-developed high-purity Quaternium-73 ingredient, Bericos® PQ73 has absolute competitive advantages in standardized chemical specifications, powerful anti-acne and antibacterial efficacy, ultra-high purity, excellent comprehensive stability and independent production strength. It solves the pain points of ordinary similar products such as low purity, unstable efficacy, poor stability and dependent supply. With ultra-low dosage, high efficiency, mild safety and wide formula adaptability, Bericos® PQ73 has become an ideal core active ingredient for high-end anti-acne, oil-control and antibacterial skincare products, helping cosmetic brands create safer, more effective and more competitive terminal products.

Elena@zhberi.com

+86 19500796925

Quaternium-73 manufacturer - Beri Pharma Co., Ltd.