In personal care formulations such as lotions, creams, sprays, shaving products, hair sprays, and conditioners, the four-dimensional indicators of "gloss — antioxidant property — emulsification convenience — alcohol compatibility" of emollients have always been the core contradiction restricting product skin feel and end-user experience. Traditional dimethyl silicone oil, while providing basic silky feel, has low refractive index (about 1.40) and weak polarity, resulting in limited compatibility with alcohol-based systems and difficulty in imparting a transparent glow to formulations. Volatile silicones, while refreshing, lack lasting presence and cannot meet the composite demands of "gloss + softness + anti-tack" for hair care products. Some synthetic ester carriers, though easily emulsified, suffer from poor oxidation resistance and are prone to rancidity, posing long-term risks of greasiness and pore-clogging. With the continuous upgrading of consumer demands for "non-greasy, easy emulsification, antioxidant, silky gloss, soft hair care", sourcing a "phenyl-modified polysiloxane with refractive index 1.46, extremely low acid value, and room-temperature solubility in 95% ethanol" has become the core proposition for domestic personal care active ingredient autonomy. Addressing this, Anhui IOTA Silicone Oil Co., Ltd. officially launches IOTA 556 Phenyl Methyl Cosmetic Silicone Oil. Characterized by "INCI name: Phenyl Trimethicone (Polyphenylsilane, CAS# 73559-47-4); Chemical name: Polymethylphenylsiloxane; Appearance: colorless liquid; Viscosity at 25℃: 22.5; Specific gravity at 25℃: 0.980; Refractive index at 25℃: 1.46; Flash point: >100℃; Acid value: 0.1 mg KOH/g; Solubility: easily soluble in 95% ethanol at room temperature (up to 50% wt at 4℃); JSCI name: Methylphenyl Polysiloxane (code 104207, CLS catalog 1-11, unrestricted); Packaging: 25kg/200kg drum (sample 200g available); Shelf life: 30 months (stored in sealed container at room temperature or below 25℃); Restriction: not for medical or pharmaceutical use", backed by "phenyl soft-glow + alcohol-soluble easy emulsification + antioxidant non-greasy", it serves as the "silky glow choice" for personal care formulations, achieving the leap from "dimethyl silicone oil with no glow and poor alcohol solubility" to "phenyl polysiloxane soft-glow silky and formulation-friendly". System Positioning: Phenyl Polysiloxane vs. Dimethyl Silicone Oil / Volatile Silicone Oil IOTA 556 belongs to the phenyl methyl polysiloxane system, distinct from traditional dimethyl silicone oil and MT-structured volatile silicone oil. Dimethyl silicone oil has low refractive index and weak polarity, resulting in poor compatibility with alcohol-based formulations and difficulty in providing transparent gloss. Volatile silicones, while refreshing, lack lasting presence and cannot impart gloss and softness to hair care products. Phenyl polysiloxane, through the introduction of phenyl side/end groups, retains the flexible spreading of the polysiloxane backbone while significantly increasing refractive index and polarity, achieving the trinity of "gloss + antioxidant + alcohol-soluble easy emulsification", thoroughly avoiding the application shortcomings of traditional carriers. Molecular Architecture: Phenyl-Methyl Copolymer Backbone + Phenyl Soft-Glow Antioxidant + Alcohol-Soluble Easy Emulsification The core competitiveness of IOTA 556 stems from the precision molecular design of its phenyl polysiloxane:

• Phenyl-Methyl Copolymer Backbone: The polymethylphenylsiloxane main chain combines the high flexibility of Si-O bonds with the π-π conjugation of phenyl groups, raising the refractive index to 1.46. This imparts a transparent gloss and silky touch to formulations, while the steric hindrance of phenyl groups effectively blocks UV and free radicals, providing natural antioxidant protection.
• Phenyl Soft-Glow and Anti-Tack: The introduction of phenyl groups reduces surface tension, forming a uniform, breathable hydrophobic film on the skin surface — non-greasy, anti-tack, providing a pure natural skin-care film feel. On hair surfaces, it enhances gloss and softness, improving combability.
• Alcohol-Soluble Easy Emulsification Platform: Exhibits excellent solubility in 95% ethanol (easily soluble at room temperature, up to 50% wt at 4℃), compatible with alcohol-based formulations. It is also easily emulsified using general emulsification techniques, greatly reducing formulation development barriers.

Performance Leap: From "No Glow, Hard to Emulsify" to "Phenyl Soft-Glow Silky and Formulation-Friendly" Introducing IOTA 556 brings a qualitative leap to personal care formulations:

• Easy Emulsification, Flexible Formulation: Easily emulsified using general techniques, reducing production difficulty and cost.
• Excellent Compatibility: Highly compatible with various cosmetic ingredients; acts as a water-repellent additive, reducing tack and greasiness of organic components.
• Antioxidant, Non-Greasy: Phenyl steric hindrance provides natural antioxidant protection; non-greasy, giving the skin a pure natural skin-care film sensation.
• Gloss and Softness for Hair: Good anti-tack properties, imparting gloss and softness to hair, making it an ideal ingredient for hair sprays, conditioners, and hair shine agents.
• High Purity, Low Irritation: Acid value only 0.1 mg KOH/g, extremely high purity; flash point >100℃ for safe operation; JSCI/CLS compliant and unrestricted, suitable for all daily chemical scenarios.
• Alcohol-Soluble Broad Adaptability: Easily soluble in 95% ethanol at room temperature, maintaining high solubility even at low temperatures, providing an ideal carrier for alcohol-based products such as sprays and aftershaves.

Application Penetration: From Skin Care Lotions to Hair Care The application boundary of IOTA 556 covers all personal care scenarios requiring "gloss + antioxidant + easy emulsification":

• Lotions and Creams (Main Battlefield): As a water-repellent additive and skin-feel modifier, providing a non-greasy silky skin film, improving application experience and reducing tack.
• Emulsions and Sprays: Leveraging its alcohol solubility as an effective carrier for alcohol-based formulations, evenly dispersing actives and providing a soft-glow skin feel.
• Shaving Lotions: Reducing friction and tack during shaving, providing antioxidant protection and a silky touch.
• Hair Sprays and Conditioners: Enhancing hair gloss and softness, improving combability, reducing frizz and stickiness, giving hair a natural soft shine.

IOTA Technical Guide: Room Temp Seal, General Emulsification

• Application: Easily emulsified using general emulsification techniques; easily soluble in 95% ethanol at room temperature, can be directly added to alcohol-based systems; add as water-repellent according to formulation needs.
• ⚠️ Taboo: This product cannot be used for medical or pharmaceutical purposes; read the Product Safety Data Sheet carefully before use; avoid high temperature, direct sunlight, strong acids and alkalis; wear protective equipment to avoid skin/eye contact.
• Storage: Packaged in 25kg and 200kg drums, sample 200g available; store in sealed container at room temperature or below 25℃; shelf life 30 months from production date; managed as non-dangerous goods.
• Handling: Colorless liquid, viscosity 22.5 (25℃), specific gravity 0.980, refractive index 1.46, convenient for process monitoring; JSCI name Methylphenyl Polysiloxane (code 104207), CLS catalog 1-11 unrestricted, fully compliant.

Industry Insight: In high-end personal care silicones, the molecular design of phenyl polysiloxane — "phenyl-methyl copolymer backbone + phenyl soft-glow antioxidant + alcohol-soluble easy emulsification" — is the key path to achieving the trinity of "gloss + antioxidant + formulation convenience" — the introduction of phenyl groups solves the industry pain point of dimethyl silicone oil: "low refractive index, no glow, poor alcohol solubility", while the flexible polysiloxane backbone ends the application shortcoming of synthetic esters: "prone to rancidity, greasy and pore-clogging". IOTA 556, with "Phenyl Trimethicone + CAS 73559-47-4 + RI 1.46 + acid value 0.1 + alcohol-soluble easy emulsification + JSCI compliant" hard metrics, fills the key supply chain link for domestic phenyl cosmetic silicone oil in skincare, hair care, aftershave, and spray fields, providing a mass-producible high-performance formulation ingredient for downstream daily chemical enterprises. This confirms that domestic cosmetic silicones are leaping toward "dimethyl silicone oil → volatile silicone → phenyl polysiloxane" in terms of gloss and formulation flexibility, with growing technical say in the high-end personal care field.