In personal care fields such as skincare, color cosmetics, haircare, sun care, and antiperspirants/deodorants, "sensory feel" is the invisible ceiling determining consumer repurchase. Traditional formulation oils (mineral oil, vegetable oil, pure D5) often face a "triple paradox": mineral oil nourishes but feels heavy and greasy; vegetable oil is natural but prone to oxidative rancidity; pure D5 (cyclopentasiloxane) spreads fast yet flashes too quickly, bringing a cooling sting and fleeting efficacy. Formulators have long lacked an ideal carrier that is "controllable volatility, silky dry feel, highly compatible with all cosmetic components, virtually non-residual after evaporation, and capable of assisting solid pigment dispersion". Under the dual squeeze of "oil-free silky" sensory upgrades and global cyclic siloxane regulatory tightening, sourcing a volatile silicone oil with "D5+D6 dual-ring synergy, strict D3/D4 impurity ceiling, and high-purity DC345-grade benchmarking" has become the core gap for domestic personal care formula autonomy. Addressing this, Anhui IOTA Silicone Oil Co., Ltd. officially launches IOTA 345 Volatile Silicone Oil (INCI: Cyclopentasiloxane & Cyclohexasiloxane). Characterized by "colorless transparent liquid; Hazen ≤20.0; D5 60.0-70.0%; D6 30.0-40.0%; (D5+D6)≥97.0%; D3≤0.25%; D4≤0.90%; moisture ≤0.025%; 190kg/drum; non-hazardous", backed by "D5/D6 dual-ring siloxane synergy + ≥97% high-purity ratio + low-volatility slow-release + high compatibility with cosmetic components", it serves as the "volatile carrier of choice" for personal care, achieving the leap from "pure D5 fast flash" to "D5/D6 dual-ring slow-release". Compositional Architecture: D5/D6 Dual-Ring Synergy + High-Purity Ratio + Strict Low-Impurity Control

• D5/D6 Dual-Ring Synergy for Slow Release: D5 (cyclopentasiloxane) flashes fast with excellent spreadability; D6 (cyclohexasiloxane) evaporates slower with a richer feel. IOTA 345 combines them in a golden 60-70% / 30-40% ratio. Compared to pure D5 products, it has lower volatility and slower evaporation, lingering on skin or hair surfaces for a certain period, delivering an elegant fade-out experience of "no cooling sting, silky dry feel, no long-term residue".
• ≥97% High-Purity Ratio: (D5+D6) content ≥97.0% ensures a pure carrier function with stable batch-to-batch consistency — a predictable "DC345-grade" benchmarking product (equivalent to Dow DC345/XIAMETER PMX-0345).
• Strict D3/D4 Impurity Control: D3≤0.25%, D4≤0.90%, moisture≤0.025% — not only guaranteeing chemical stability and compatibility, but also reserving safety margin for global cosmetic regulatory boundaries. Under the EU (EU) 2024/1328 amendment, D4/D5/D6 in cosmetic products are restricted to concentrations not exceeding 0.1% from June 6, 2027. IOTA 345's low D4 residue design provides a foundational guarantee for compliant use in domestic transition-period formulations and rinse-off products.

Performance Leap: From "Fast-Flash Greasiness" to "Slow-Release Silkiness"

• Refreshing Non-Greasy Feel: Virtually non-residual after evaporation, taking away oil shine and tackiness, imparting silky, dry, soft touch to skin and hair.
• Slow Release Without Trace: Lower volatility than pure D5 avoids cooling sting upon application; elegantly fades out after briefly lingering on skin surface, leaving no long-term residue.
• Excellent Spreadability: Low surface tension enables easy, uniform spreading on skin or hair, forming an extremely thin, uniform temporary film, greatly enhancing application pleasure.
• Assists Pigment Dispersion: Lowers surface tension, serving as wetting and dispersion medium for solid pigments (TiO₂, iron oxides, mica, etc.), enabling more uniform powder distribution for longer-lasting, better-adhering makeup.
• Broad Compatibility: Highly compatible with waxes, fatty acids, fatty acid esters, mineral oils, non-volatile silicone oils, absolute ethanol, and many other cosmetic components — versatile for formulation.

Application Penetration: From Skincare Sunscreen to Color Cosmetics & Haircare

• Skincare & Sunscreen: Improves spreadability of emulsions, creams, and sunscreens, imparting non-greasy refreshing feel; serves as temporary carrier for uniform distribution of active ingredients on skin surface.
• Color Cosmetics (Main Battlefield): In foundations and primers, lowers surface tension and assists solid pigment dispersion for uniform powder distribution and longer-lasting, better-adhering makeup; can be used alone or blended with other components.
• Haircare Products: Used in conditioners, hair masks, hair serums, and styling products to impart silky, dry, easy-to-comb touch without heavy residue.
• Antiperspirants & Deodorants: Serves as volatile medium for antiperspirants and deodorants, providing dry feel and active ingredient carrier function.
• Massage Oils & Body Care: As base for massage creams and oils, delivers silky dry massage handfeel without greasy residue after evaporation.

IOTA Technical Guide: Avoid Fire & Sun, Flexible Formulation

• Application: Can be used alone or blended with compatible components such as waxes, fatty acids, fatty acid esters, mineral oils, non-volatile silicone oils, and absolute ethanol; specific methods and recommended dosages must be determined per individual formulation — contact IOTA technical service for appropriate information.
• ⚠️ Taboo: Although non-hazardous, as a low-flash volatile liquid, store in ventilated, cool place, prevent rain and sunlight exposure; keep away from fire and high temperature; EU leave-on cosmetics are subject to (EU) 2024/1328 0.1% concentration limit from June 6, 2027 — export leave-on SKUs must parallel-build alternative routes using iso-dodecane or linear volatile silicones.
• Storage: 190kg/drum packaging; store in ventilated, cool place; prevent rain and sunlight; non-hazardous storage and transport.
• Handling: Colorless transparent liquid, virtually odorless; recommend adding during the cooling phase of formulation (<60℃) to preserve volatile component activity; for pigment dispersion, pre-treat with 3-roll mill or high-shear equipment.

Industry Insight: Under the dual squeeze of personal care "oil-free silky" sensory upgrades and global cyclic siloxane regulatory tightening, D5/D6 blended volatile silicone oils are upgrading from "generic DC345 followers" to "controlled carriers requiring impurity reports + regional compliance labels". IOTA 345, with "D5+D6≥97% + D4≤0.90% + Hazen≤20 + 190kg industrial pack" hard metrics, fills the domestic supply chain gap for DC345-grade dual-ring silicones in skincare/makeup/haircare carrier fields, providing a mass-producible import-substitution path (benchmarking Dow PMX-345, Momentive VISIOLA) for downstream daily-chem plants in non-EU/rinse-off/domestic-transition formulas. This confirms domestic personal care silicones are leaping toward "single D5 → D5/D6 blend → high-purity controlled carrier", achieving dual leaps in sensory and compliance. Meanwhile, formulators must be reminded — IOTA 345 solves feel and dispersion, not the EU 2027 leave-on cliff; export SKUs must parallel-build iso-dodecane/linear volatile silicone routes.