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Dow DOWSIL SH 556 Fluid is a cosmetic-grade phenyl silicone fluid in DOWSIL SH series, designed for premium personal care formulations. With phenyl trimethicone as core ingredient, it delivers excellent skin feel, gloss and system compatibility, providing high-performance solutions for skincare, sun care, color cosmetics, hair care and antiperspirant applications.
Light & Silky Skin Feel - Spreads smoothly without stickiness, delivers soft and comfortable skin touch
High Refractive Gloss - Enhances product gloss, creates natural translucent makeup and hair shine
Wide System Compatibility - Compatible with most cosmetic oils and active ingredients, easy to emulsify
Excellent Stability & Weather Resistance - Anti-oxidation and UV-resistant, ensures long-term formula stability
Light & Breathable Film - Forms breathable protective film, locks moisture without clogging pores
Skincare Formulations - Creams, lotions and serums, improve skin feel and moisturizing effect
Sun Care Products - Sunscreens and sprays, enhance film-forming and sun protection system stability
Color Cosmetics - Foundations, lipsticks and nail polishes, improve gloss and application spreadability
Hair Care Products - Hair oils and conditioners, impart smooth shine and reduce hair frizz
Antiperspirant & Deodorant - Antiperspirants and deodorants, optimize skin feel and user experience
| Brand | DOW |
| Product Type | Cosmetic-Grade Phenyl Silicone Fluid |
| INCI Name | Phenyl Trimethicone |
| Active Ingredient | 100% (Typical) |
| Appearance | Colorless Transparent Liquid (Typical) |
| Specific Gravity (25℃) | 0.98 (Typical) |
| Refractive Index (25℃) | 1.455~1.465 (Typical) |
| Temperature Resistance Range | -50℃ ~ 200℃ (Typical) |
Q1: What is the primary functional role of DOWSIL SH 556 Silicone Oil in formulations?
A: DOWSIL SH 556 is a high-molecular-weight, dimethyl silicone fluid designed primarily as a surface modifier and lubricity enhancer. It imparts smoothness, slip, and hydrophobic character to coatings, inks, adhesives, and personal care emulsions without significantly affecting viscosity or film integrity.
Q2: Is DOWSIL SH 556 compatible with water-based systems?
A: Yes — it can be effectively incorporated into aqueous systems using appropriate emulsifiers or high-shear processing. While inherently hydrophobic, it is commonly used in stable silicone emulsions for water-based paints, textile finishes, and cosmetic lotions where controlled dispersion is required.
Q3: How does DOWSIL SH 556 differ from lower-viscosity silicone oils like DOWSIL 200 Fluid?
A: DOWSIL SH 556 has significantly higher molecular weight and viscosity, resulting in greater film persistence, reduced volatility, and enhanced surface enrichment. Unlike low-viscosity fluids, it provides longer-lasting slip and anti-blocking effects in demanding applications such as pressure-sensitive adhesives and release coatings.
Q4: Can DOWSIL SH 556 be used in direct food-contact applications?
A: DOWSIL SH 556 is not pre-approved for direct food contact. Its suitability for indirect food-contact applications (e.g., release agents for food packaging) depends on final formulation compliance with applicable regional regulatory requirements and must be evaluated case by case with supporting documentation.
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