In personal care formulations such as styling gels, mousses, facial cleansers, and creams, the four-dimensional indicators of "water dispersion — emulsification stability — transparent appearance — gentle non-irritation" for silicone oils and other oily substances have always been the core contradiction restricting end-product experience and consumer satisfaction. Traditional polydimethylsiloxane, while providing a silky feel, is insoluble in water and difficult to use directly in aqueous or transparent systems. Ordinary non-ionic emulsifiers, while capable of emulsifying silicones, often affect foam performance or produce a sticky feeling at high concentrations, making it difficult to meet the aesthetic requirements of "oil-free transparent" formulations such as clear gels and refreshing facial cleansers. Some synthetic emulsifiers are highly irritating and unsuitable for sensitive skin. With the Clean Beauty trend and continuous upgrading of comprehensive demands for "refreshing hydration, transparent texture, gentle non-irritation, stable foam", finding a polyether-modified polydimethylsiloxane with "PEG/PPG-15/10 modification, specific gravity 1.035-1.060 g/cm³, viscosity 300-600 cSt" has become the core proposition for the refinement of domestic personal care silicones. Addressing this, Anhui IOTA Silicone Oil Co., Ltd. officially launches IOTA 9919 PEG/PPG-15/10 Dimethicone (INCI/CTFA Name: PEG/PPG-15/10 Dimethicone). Characterized by "colorless to pale yellow transparent liquid; specific gravity 1.035-1.060 g/cm³ (25°C); viscosity 300-600 cSt (25°C); refractive index 1.4500-1.4600 (25°C); ethoxylated non-ionic hydrophilic groups on side chains; low surface tension; soluble in water, propylene glycol and glycerin", backed by "polyether hydrophilic side chain + siloxane inert backbone + non-ionic surfactant", it serves as the "water-soft choice" for personal care, achieving the leap from "traditional silicone insoluble in water" to "polyether-modified silicone water-soluble emulsifying silky hydration". System Positioning: PEG/PPG-15/10 Dimethicone vs. Traditional Dimethicone / Ordinary Emulsifiers IOTA 9919 belongs to the polyether-modified polydimethylsiloxane system, distinct from traditional dimethicone and ordinary emulsifiers. Traditional dimethicone is purely oily, insoluble in water, and difficult to use directly in transparent aqueous formulations. Ordinary emulsifiers can emulsify but fail to impart the unique silky softness and antistatic properties of silicones. Polyether-modified silicone innovatively grafts PEG/PPG hydrophilic segments onto the polysiloxane side chain — the hydrophilic groups provide excellent water solubility and surface activity, while the siloxane backbone retains softness, smoothness, and breathability, thoroughly solving the industry challenge of "silicone aqueous dispersion". Molecular Architecture: PEG/PPG Ethoxylated Hydrophilic Side Chain + Polydimethylsiloxane Inert Backbone + Non-Ionic Surfactant The core competitiveness of IOTA 9919 stems from the precision molecular design of PEG/PPG-15/10 dimethicone:

• PEG/PPG Ethoxylated Hydrophilic Side Chain: Partial ethoxylated non-ionic hydrophilic groups on the molecular side chain provide good water solubility and surface activity, lowering liquid surface tension, making it easily soluble in water, propylene glycol and glycerin, and offering excellent emulsifying properties for silicone oils and other oily substances.
• Polydimethylsiloxane Inert Backbone: Retains the softness, smoothness, antistatic property, and breathability of organosiloxane, providing a silky, soft effect, making skin and hair feel moisturized, while being physiologically inert and non-irritating to skin.
• Non-Ionic Property and Foam Stability: The non-ionic structure brings excellent compatibility and foam stability, suitable for various cosmetic formulations (e.g., transparent products), and can increase formulation stability; refractive index 1.4500-1.4600 provides good optical matching without affecting the appearance of transparent systems.

Performance Leap: From "Oil-Water Separation" to "Water-Soluble Emulsifying Silky Hydration" Introducing IOTA 9919 brings a qualitative leap to personal care formulations:

• Excellent Emulsification: Outstanding emulsifying ability for silicone oils and other oily substances, serving as an emulsifier for various silicones and oily raw materials, simplifying formulation process.
• Good Foam Stability: Enhances foam density and durability in facial cleansers, mousses, styling gels, improving cleansing experience.
• Silky Soft Hydration: Gives skin a silky, soft effect, with moisturizing effect, avoiding the tightness caused by traditional surfactants.
• Transparent Formulation Adaptability: Soluble in water and widely compatible, suitable for transparent products (e.g., styling gels, transparent facial cleansers), not affecting formulation clarity.
• Antistatic and Breathable: Antistatic property reduces static flyaway during wet and dry combing of hair; breathability ensures free skin breathing without pore clogging.
• Gentle Non-Irritating: Non-irritating to skin, suitable for sensitive skin and daily cleansing care products.

Application Penetration: From Styling Gels to Creams and Aerosols The application boundary of IOTA 9919 covers all personal care scenarios requiring "water-soluble emulsification + silky hydration + transparent stability":

• Styling Gels and Mousses (Main Battlefield): As a stabilizing foam agent and plasticizer, providing dense foam and silky styling effect, non-sticky and easy to wash.
• Facial Cleansers: Enhances foam stability and cleansing feel, no tightness after washing, giving skin a soft moisturizing feeling.
• Creams: Improves cream gloss and spreadability, increases formulation stability, provides silky application.
• Transparent Products: Used in transparent skin toners or gels, maintaining system clarity while delivering the benefits of silicone softness.
• Aerosol Products: As a stabilizing foam agent and plasticizer for silicone resins, improving foam quality and skin feel of spray products.

IOTA Technical Guide: Dual-Phase Compatible, Water-Soft First

• Application: Can be directly added to water phase or oil phase components; recommended usage adjusted per formulation; excellent compatibility with various cosmetic ingredients for easy compounding.
• ⚠️ Taboo: This product is non-hazardous, but prevent moisture and impurities like acids/bases during storage and transportation; avoid prolonged contact with strong acids/bases.
• Storage: Sealed at room temperature, stored in dry cool place, avoid direct sunlight and high temperature; containers must be tightly sealed after each use; shelf life 2 years.
• Handling: Colorless to pale yellow transparent liquid, viscosity 300-600 cSt (25°C) convenient for metering and pumping; refractive index 1.4500-1.4600 for optical testing; specific gravity 1.035-1.060 g/cm³ for density verification; packaging: 25 kg plastic drum or 200 kg iron drum.

Industry Insight: In personal care silicones, the molecular design of PEG/PPG-15/10 dimethicone — "polyether hydrophilic side chain + siloxane inert backbone + non-ionic surfactant" — is the key path to achieving the trinity of "water-soluble emulsification + silky hydration + transparent stability" — the introduction of PEG/PPG solves the industry pain point of traditional dimethicone: "insoluble in water, unable to be used in transparent aqueous formulations", while the 15/10 EO/PO ratio balances water solubility and emulsifying power, ending the application shortcoming of ordinary emulsifiers: "destroying foam, lacking silicone feel". IOTA 9919, with "INCI PEG/PPG-15/10 Dimethicone + viscosity 300-600 cSt + specific gravity 1.035-1.060 + refractive index 1.4500-1.4600 + water-soluble non-irritating" hard metrics, fills the key supply chain link for domestic polyether-modified silicone in personal care (styling gels/mousses/facial cleansers/creams/aerosols), providing a mass-producible gentle water-soluble silicone emulsifier for downstream daily chemical enterprises. This confirms that domestic personal care silicones are leaping toward "traditional silicone → emulsified silicone → polyether-modified silicone" in terms of aqueous compatibility and gentleness, with growing technical say in high-end personal care cleansing fields.