In the process of the personal care products industry, such as skincare products, makeup products and sunscreen products, which are continuously developing towards a refreshing texture, high stability and diversified formulations, an efficient emulsifier that possesses excellent oil-in-water and water-in-silicone emulsifying capabilities, as well as wide applicability to various oils, is becoming a core technical element in the development of formulation systems. The product we have launched, 99366, a hydrophobic alkyl emulsified silicone oil, with the INCI name of lauryl PEG-9 polydimethylsiloxyl ethyl polydimethylsiloxane, is a hydrophobic alkyl polyether modified polydimethylsiloxane. As a hydrophobic hydrophilic polyether modified polydimethylsiloxane, it demonstrates outstanding water-in-silicone and oil-in-water emulsifying capabilities, extensive emulsifying applicability to silicone oils and non-silicone esters, and excellent dispersion ability for powder raw materials. It showcases significant market value in various applications such as skincare, makeup and sunscreen products, providing a broad-spectrum and efficient emulsification solution for the personal care industry.


I. Core Physical and Chemical Properties of the Product


The product, hydrophobic alkyl emulsified silicone oil 99366, is a colorless to light yellow transparent to semi-transparent liquid. At 25 degrees Celsius, its specific gravity is 0.900 to 0.950, and its viscosity is 400 to 800 centistokes, with a refractive index of 1.4250 to 1.4350. It is a hydrophobic alkyl polyether polydimethylsiloxane, belonging to non-ionic surfactants, possessing both the hydrophilic nature of the polyether chain segments and the hydrophobic nature of the long-chain alkyl and organic silicone chain segments, making it exhibit excellent emulsifying ability in various oil-phase systems.


II. Core Performance Advantages of the Product


The hydrophobic alkyl emulsified silicone oil 99366, with its unique alkyl polyether modified structure, demonstrates the following core performance advantages in personal care product formulations:


Outstanding water-in-silicone and oil-in-water emulsifying capabilities. The product has excellent oil-in-water and water-in-silicone emulsifying properties, being able to stably disperse a high proportion of water phase in various oil phases, forming a fine and stable emulsified system, with outstanding emulsifying stability.


Extensive emulsifying applicability to silicone oils and non-silicone esters. The product not only has good emulsifying ability for silicone oil raw materials, but also shows good emulsifying effects on natural oils and synthetic esters of non-silicone, providing a broader raw material selection space for formulation designers.


Ease of emulsification and convenience of low-temperature operation. The product is easy to emulsify, and can complete the emulsification operation at room temperature, achieving stable emulsions with rapid stirring.


Silky and non-greasy skin sensation and excellent powder dispersion ability. The product provides a silky and non-greasy skin sensation experience, and has excellent dispersion ability for powder raw materials, suitable for formulations containing color powders and sunscreen agents.


III. Wide Application Areas


The hydrophobic alkyl emulsified silicone oil 99366, with its multi-system emulsifying capabilities and excellent skin sensation characteristics, can play a key role in the following personal care product application areas, specifically including:


1. Skincare products. In skincare formulations such as lotion, cream, essence cream and sleep mask, hydrophobic alkyl emulsified silicone oil 99366 can be used as the main emulsifier, constructing a stable and fine oil-in-water or water-in-silicone emulsified system, providing a refreshing and silky skin sensation experience. The recommended addition amount is 0.3% to 5% of the total formula.


2. Makeup products. In makeup formulations such as foundation liquid, BB cream, primer and makeup primer, hydrophobic alkyl emulsified silicone oil 99366 can effectively emulsify and disperse the silicone oil and organic oil phase components in the formulation, while also having excellent dispersion ability for color powders, helping to form a stable and uniform emulsified system, improving the application smoothness, coverage and hold-up effect of the product.


3. Sunscreen products. In the sunscreen care formulas such as sunscreen lotion, sunscreen cream and sunscreen spray, the product hydrophobic alkyl emulsified silicone oil 99366 can help stabilize the emulsified system, ensure the uniform dispersion of organic and inorganic sunscreen agents, enhance the spreadability and water resistance of the product, and give the sunscreen product a refreshing and non-greasy usage experience.


IV. Usage Method and Process Suggestions


When using product hydrophobic alkyl emulsified silicone oil 99366, it is necessary to first mix the oil phase and emulsifier evenly. Under rapid stirring, slowly add the water phase in several portions to the oil phase and stir rapidly until evenly mixed. Increasing the stirring speed can improve the stability of the emulsified system. Increasing the proportion of water phase can increase the viscosity of the system. If all raw materials are liquids, the emulsification can be carried out at room temperature without homogenization, and a stable emulsion can be obtained through rapid stirring. Adding electrolyte solutions to the water phase can improve the storage stability of the emulsion system. Adding anti-freezing agents such as propylene glycol and glycerin can enhance the anti-freezing effect of the product.


V. Recommended Dosage


The recommended addition amount of product hydrophobic alkyl emulsified silicone oil 99366 as the main emulsifier is 0.3% to 5% of the total formula. The specific addition amount needs to be determined through experiments based on the formulation system and performance requirements of the target product.


VI. Packaging Specifications and Storage Conditions


Product hydrophobic alkyl emulsified silicone oil 99366 is packaged in twenty-kilogram or two-hundred-kilogram plastic drums. This product is non-hazardous, and during storage and transportation, attention should be paid to moisture prevention and preventing the mixing of acids, alkalis and other impurities.


VII. Quality Assurance and Industry Application Value


Product hydrophobic alkyl emulsified silicone oil 99366 has established a strict quality control system during the production process. Key indicators such as product appearance, specific gravity, viscosity and refractive index are tested throughout the process to ensure consistency and reliability between batches.


As skincare products, makeup products and sunscreen products continue to develop towards a refreshing sensation, multi-oil phase systems and simplified formulations, the demand for efficient emulsifiers with broad emulsifying capabilities and powder dispersion performance is steadily increasing. Product hydrophobic alkyl emulsified silicone oil 99366, with its extensive emulsifying applicability to both silicone oils and non-silicone esters, outstanding emulsifying stability, and silky and non-greasy skin feel characteristics, is becoming an important emulsifier option in the development of skincare, makeup and sunscreen products, providing strong support for promoting the domestic personal care industry towards higher quality and diversification.