In personal care formulation scenarios such as skincare, sun care, makeup, deodorants, antiperspirants, and hair conditioning, the four-dimensional performance of "evaporation rate — spreadability — skin freshness — component compatibility" of volatile carriers has always been the core contradiction restricting product application experience and end texture. Traditional mineral oils and vegetable oils, while emollient, tend to leave a heavy oily film on the skin surface, causing stickiness, clogged pores, and pilling, making it difficult to meet consumers' core demand for "light and non-greasy". Ordinary linear polydimethylsiloxanes (e.g., dimethyl silicone oil), while silky, have high molecular weight and slow evaporation, still leaving a residual feel after long-term use. Traditional volatile solvents (e.g., iso-dodecane, ethanol) dry quickly, but their excessive volatility brings a cooling irritation, and their compatibility with polar components is poor, affecting formulation stability. With the continuous upgrading of high-end personal care demands for "refreshing silky skin feel, oil-free formulas, long-lasting hydration without stuffiness", sourcing a volatile siloxane carrier with "low viscosity, rapid evaporation, excellent spreadability, colorless odorless non-irritating, high compatibility" has become the core proposition for domestic cosmetic active ingredient autonomy. Addressing this, Anhui IOTA Silicone Oil Co., Ltd. officially launches IOTA 9229 Methyl Trimethicone. Characterized by "MT-structured volatile siloxane; INCI name: Methyl Trimethicone; appearance: colorless transparent liquid; viscosity at 25℃: 1.5 mm²/s; refractive index: 1.385; density: 0.85; content >99%; packaging: 20L and 200L iron drums (among others); sealed storage in dry, cool place, avoid acid/alkali contact, away from fire; shelf life: 24 months", backed by "MT structure precise volatility + low surface tension excellent spreadability + high-purity lightweight skin feel", it serves as the "volatile emollient" for cosmetic formulations, achieving the leap from "traditional emollients' heavy residue" to "MT siloxane volatile non-residue". System Positioning: MT-Structured Volatile Siloxane vs. Linear Silicone Oil / Mineral Oil / Volatile Solvents IOTA 9229 belongs to the MT-structured (Methyl-Terminated / cyclic oligomeric) volatile siloxane system, distinct from linear polydimethylsiloxane, mineral oil, and traditional volatile solvents. Linear dimethyl silicone oil has high molecular weight and slow evaporation, leaving a residual feel; mineral oil and vegetable oils easily form heavy oil films, sticky and pore-clogging; volatile solvents like iso-dodecane and ethanol dry fast but evaporate too aggressively, causing cooling irritation and poor compatibility with polar components. MT-structured volatile siloxanes achieve controllable evaporation rates through precise molecular chain regulation, leaving no residue or irritation after evaporation while retaining the inherently low surface tension and excellent spreadability of siloxanes, thoroughly avoiding the application shortcomings of traditional carriers. Molecular Architecture: MT-Structured Controlled Volatility + Low Surface Tension Spreadability + High-Purity Lightweight Skin Feel The core competitiveness of IOTA 9229 stems from the precision molecular design of its MT-structured volatile siloxane:

• MT Structure Achieves Controlled Volatility: The short-chain oligomeric structure of Methyl Trimethicone gives it unique volatility, with a viscosity of only 1.5 mm²/s, enabling rapid and uniform evaporation and dissipation on the skin surface without leaving an oily film after evaporation, giving the formulation a "leave-no-trace" refreshing characteristic.
• Low Surface Tension Ensures Excellent Spreadability: With a density as low as 0.85 and a refractive index of 1.385, the naturally low surface tension allows actives and pigments to spread rapidly and distribute evenly on skin and hair surfaces, improving application performance, reducing application resistance, and preventing pilling.
• High Purity Achieves Lightweight Silky Skin Feel: With a content >99%, it is colorless, odorless, and non-irritating, highly compatible with various cosmetic components, offering a lightweight, non-greasy texture that gives the skin a soft, silky touch, significantly enhancing the application experience of skincare, makeup, and sun care products.

Performance Leap: From "Heavy Residue" to "Volatile Non-Residue Silky Skin Feel" Introducing IOTA 9229 brings a qualitative leap to cosmetic formulations:

• Easy Spreadability, Improved Application: Low surface tension enables rapid spreading and even distribution on the skin surface, significantly improving application performance, reducing application resistance and pilling.
• High Compatibility, Flexible Formulation: Highly compatible with various cosmetic components (oils, actives, pigments, UV filters), it can be flexibly incorporated as a solvent or carrier into various formulation systems.
• Volatile Non-Residue, Oil-Free Freshness: The unique volatility allows the carrier to evaporate rapidly after uniform spreading of actives, leaving no oily film residue, providing an "oil-free" refreshing texture that is non-comedogenic and non-sticky.
• Lightweight Silky Skin Improvement: Lightweight and non-greasy, it gives the skin a soft, silky feel, improving formulation texture and enhancing product grade.
• Colorless, Odorless, Non-Irritating: High purity at >99%, colorless, odorless, and mild, suitable for sensitive skin and infant care scenarios.
• Comprehensive Formulation Improvement: Improves overall skin feel, texture, and application performance, making it an ideal ingredient widely used in cosmetic formulations.

Application Penetration: From Skincare and Sun Care to Hair Conditioning The application boundary of IOTA 9229 covers all personal care scenarios requiring "refreshing volatility + excellent spreadability + silky skin feel":

• Skincare and Sun Care (Main Battlefield): As a volatile carrier, it improves the spreadability and freshness of emulsions, creams, and sunscreens, reducing stickiness and enhancing application pleasure.
• Makeup: Used in foundations, lipsticks, and primers to improve pigment dispersion and silky texture, prevent caking and pilling, and enhance makeup-wearing experience.
• Deodorants and Antiperspirants: Rapid evaporation carries active ingredients, leaving a clean, non-residual feel and reducing skin stickiness and discomfort.
• Hair Conditioning: As a volatile carrier in hair care products, it improves combability, gloss, and lightweight feel without making hair greasy or flat.

IOTA Technical Guide: Seal Moisture-Proof, Avoid Acid/Alkali and Fire

• Application: Add directly as a volatile carrier or solvent into the oil phase and mix evenly with other components; leverage its excellent solubility and spreadability for actives and pigments to optimize formulation application performance.
• ⚠️ Taboo: Store in sealed packaging, avoid contact with acids and alkalis (to prevent siloxane chain degradation), and keep away from fire sources; avoid high temperature and direct sunlight to prevent accelerated evaporation.
• Storage: Available in 20L and 200L iron drum packaging (among others); store in sealed packaging in a dry, cool place; shelf life: 24 months.
• Handling: Colorless transparent liquid, viscosity 1.5 mm²/s, density 0.85, refractive index 1.385, facilitating process monitoring and quality identification; recommended as a volatile emollient/solvent in formulations, with addition amount adjusted per formulation requirements.

Industry Insight: In high-end personal care actives, the molecular architecture of MT-structured volatile siloxanes — "controlled volatility + excellent spreadability + lightweight silky skin feel" — is the key path to achieving the trinity of "light and non-greasy, volatile non-residue, easy spreadability" — the introduction of the MT short-chain structure solves the industry pain point of traditional emollients: "heavy residue, sticky and pore-clogging", while the high-purity siloxane ends the application shortcoming of volatile solvents: "strong irritation, poor compatibility". IOTA 9229, with "Methyl Trimethicone + INCI name + viscosity 1.5 mm²/s + content >99% + colorless odorless non-irritating" hard metrics, fills the key supply chain link for domestic MT-structured volatile siloxanes in skincare, sun care, makeup, antiperspirant/deodorant, and hair conditioning, providing a mass-producible high-performance formulation ingredient for downstream daily chemical enterprises. This confirms that domestic cosmetic silicones are leaping toward "mineral/vegetable oil → linear silicone → MT volatile siloxane" in terms of skin freshness and formulation flexibility, with growing technical say in the high-end personal care field.