Polymethylsilsesquioxane-CAS 68554-70-1
Product Name: Polymethylsilsesquioxane
Alias: Methyl Silsesquioxane Resin, Silicon Microsphere Powder, Matte Soft-focus Film-forming Polymer, PMSQ Silicone Resin
INCI Name: Polymethylsilsesquioxane
CAS Number: 68554-70-1
Molecular Formula: Cross-linked Methyl Silsesquioxane Polymer
Molecular Weight: Silicon-based Macromolecular Polymer
Effective Content: ≥99.0%
Appearance: White Uniform Spherical Fine Powder
Grade: High-end Cosmetic Grade / Ultra-fine Functional Grade
MOQ: 25KG
Package: 25KG Paper Drum / Plastic Drum
Shelf Life: 24 Months (Sealed & Stored in Shady and Dry Place)
Polymethylsilsesquioxane, Silicone Microsphere Powder, Soft-focus Film-forming Resin, Oil-control Matte Modifier, Skin Feel Smoothing Agent, Long-wear Makeup Stabilizer, Breathable Cosmetic Silicon Polymer
Polymethylsilsesquioxane-CAS 68554-70-1
Polymethylsilsesquioxane (PMSQ) is a three-dimensional cross-linked spherical silicone functional polymer synthesized via hydrolysis and polycondensation of methyl silane monomers.
With unique compact spherical microsphere structure and moderate cross-linking density, it integrates soft-focus blurring, breathable film formation, oil-control matte modification and skin feel optimization functions in one.
Different from rigid waterproof MQ silicone resin and flexible polyurethane resin, this product features semi-occlusive breathable film-forming property, strong oil absorption and light refraction effect.
It can form a uniform, soft and skin-friendly breathable protective film on the skin surface, effectively adsorb surface sebum, reduce skin gloss, and realize natural matte velvet skin texture without dryness or tightness. Its unique spherical particle structure can blur skin pores and fine lines, present natural soft-focus makeup effect, and significantly improve powder spreadability and fitting degree.
In formula systems, it enhances makeup adhesion and rub resistance, avoids powder floating and cakeing, and perfectly balances oil control and moisturizing breathability. With excellent chemical stability, low surface activity and ultra-mild safety, it is the core functional raw material for high-end matte clean beauty and long-wear breathable makeup products.
Key Benefits
• Natural Soft-focus Blurring & Velvet Matte: Unique spherical microsphere light refraction structure, naturally blurs pores and fine lines, eliminates greasy shine, creates high-grade non-flat velvet matte skin texture without fake white or mask face.
• Breathable Semi-occlusive Film-forming, Non-dry & Non-tight: Different from dense waterproof resin film, it forms breathable protective layer, balances oil control and moisturizing, avoids dry and tight skin caused by full occlusion, suitable for long-time daily makeup.
• Excellent Oil-absorbing & Long-lasting Oil Control: Uniform microsphere gap structure efficiently adsorbs excess sebum and sweat, continuously inhibits oil shine, maintains long-term clean and matte skin state, and greatly prolongs makeup durability.
• Optimized Skin Feel & Powder Spreadability: Ultra-smooth spherical particles improve powder slip and ductility, reduce formula friction, make makeup application more docile, effectively prevent floating powder, dry lines and caking.
• Super System Compatibility & Stability: Excellent compatibility with silicone oil, ester oil and powder systems, stable in wide pH and temperature range, no agglomeration or precipitation, effectively improves formula anti-caking performance.
• Ultra-mild & High Safety: Inert silicon-based polymer material, non-irritating, low allergenicity, non-comedogenic, compliant with clean beauty standards, suitable for long-term repeated use in sensitive skin formulas.
Applications
• Matte Long-wear Base Makeup: Matte foundation, oil-control cushion compact, long-lasting BB/CC cream, pore-minimizing primer, nude makeup base products.
• Loose Powder & Pressed Powder Series: Setting loose powder, finishing pressed powder, oil-control makeup powder, transparent brightening powder products.
• Soft-focus Color Cosmetics: Matte blush, contour shadow, soft-focus eye shadow, non-gloss matte lip makeup products.
• Breathable Oil-control Skincare & Sunscreen: Refreshing oil-control lotion, breathable matte sunscreen, daily isolation milk, pore refining skincare products.
• Smooth Hair Care Products: Anti-frizz hair spray, fluffy dry shampoo, matte shaping hair care formulas, smooth hair finishing products.
Certificate Of Analysis (COA)
Test Item | Standard Specification | Test Result |
Product Name | Polymethylsilsesquioxane | Compliant |
Appearance (25℃) | White uniform spherical fine powder | White ultra-fine spherical powder |
Effective Content | ≥99.0% | 99.3% |
Average Particle Size | 1-8μm | 4.2μm |
Bulk Density (g/cm³) | 0.25-0.30 | 0.27 |
Volatile Matter | ≤0.1% | 0.03% |
Ash Content | ≤0.1% | 0.02% |
Odor | Odorless, no peculiar smell | Compliant |
Conclusion | Conforms to high-end cosmetic grade enterprise standards | Qualified |
Frequently Asked Questions (FAQ)
• Q1: What is the core difference between PMSQ and MQ silicone resin?
A1: MQ resin is compact and fully closed film-forming with extreme waterproof and anti-transfer performance, suitable for heavy waterproof makeup; Polymethylsilsesquioxane forms semi-occlusive breathable soft film, focusing on oil control, soft-focus blurring and natural matte effect, with non-dry and non-tight skin feel, more suitable for daily breathable matte long-wear makeup.
• Q2: What is the recommended formula addition ratio?
A2: 2%-5% for matte base makeup, 5%-15% for powder products, 1%-3% for breathable sunscreen, 1%-4% for oil-control skincare, 2%-6% for matte hair styling products, adjustable according to formula matte degree and oil-control requirements.
• Q3: Will long-term use cause dry skin or dullness?
A3: No. Different from traditional full-blocking matting powder, PMSQ has semi-breathable film-forming property, which can balance oil and water without blocking skin respiration. It only absorbs excess surface oil, retains basal moisture, and keeps skin matte and moist all day without dryness or dullness.
• Q4: Is it compatible with powder and oil-phase systems?
A4: It has ultra-wide compatibility. It can be perfectly dispersed in various powder formulas, silicone oils and ester oils, with uniform system, no agglomeration, significantly improving powder smoothness and formula stability.
• Q5: What makes its soft-focus effect unique?
A5: Its uniform spherical microsphere structure forms multi-angle light refraction, naturally blurs pores and fine lines without covering skin texture, realizing high-grade translucent matte skin, avoiding the flat and fake white effect of traditional matting raw materials.
• Q6: Does it support stable bulk supply and technical services?
A6: Standardized high-end cosmetic grade production with stable particle size, oil absorption and matting performance, sufficient inventory, supports long-term bulk supply and global export, and provides professional formula debugging, matte soft-focus system optimization and skin feel customization technical support.
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