Polysilicone-15, Silicone UVB Filter(CAS 207574-74-1)
Product Name: Polysilicone-15
Alias: Silicone-based UVB Absorber, Benzylidene Malonate Polysiloxane, Photostable Sunscreen Polymer, Parsol SLX Equivalent Grade
INCI Name: Polysilicone-15
CAS Number: 207574-74-1
Molecular Formula: Siloxane-based Benzylidene Malonate Copolymer
Molecular Weight: High-molecular Photostable Silicone Polymer
Effective Content: ≥99.0%
Appearance: Colorless to Pale Yellow Transparent Viscous Liquid
Grade: High-end Cosmetic Sunscreen Grade / Photostable Functional Grade
MOQ: 25KG
Package: 25KG Plastic Drum
Shelf Life: 24 Months (Sealed & Stored in Shady and Dry Place)
Polysilicone-15, Silicone UVB Filter, Photostable Sunscreen Polymer, Avobenzone Stabilizer, Breathable Sunscreen Film Former, Silky Skin Feel Emollient, Long-lasting UV Protection Agent
Polysilicone-15, Silicone UVB Filter(CAS 207574-74-1)
Polysilicone-15 is a high-efficiency photostable silicone copolymer formed by grafting benzylidene malonate UV-absorbing functional groups on the siloxane molecular backbone.
It is a professional macromolecular UVB filter exclusive for high-end cosmetic sun care, featuring accurate absorption of 290-340nm UVB band with a peak absorption at 312nm.
Different from traditional small-molecule sunscreen filters that are easy to photolyze and decompose, its polymeric silicone structure provides excellent molecular stability, effectively avoiding sunscreen failure and skin irritation caused by small-molecule precipitation and degradation.
The product can form a uniform, thin and breathable protective film on the skin surface, delivering stable long-term UVB shielding effect. Meanwhile, it has unique synergistic stabilization performance for UVA filter Avobenzone, significantly improving the overall photostability of broad-spectrum sunscreen formulas.
With the inherent silky smoothness of silicone materials, it optimizes formula skin feel, eliminates greasy and sticky defects of traditional sunscreen products, and has excellent compatibility with various oil-phase sunscreen agents and cosmetic substrates. It is the core upgrading raw material for safe, stable, long-acting and comfortable high-end sunscreen systems.
Key Benefits
• High-efficiency UVB Shielding, Accurate Band Absorption: Precisely absorbs 290-340nm UVB ultraviolet rays with high molar extinction coefficient, effectively prevents sunburn, tanning and epidermal light damage, and provides reliable short-wave ultraviolet protection.
• Ultra-high Photostability, No Light Decomposition: Unique macromolecular silicone cross-linked structure is resistant to ultraviolet photolysis, maintains stable sunscreen efficacy under long-term sunlight irradiation, no efficacy attenuation, and solves the failure problem of traditional small-molecule sunscreens.
• Professional Avobenzone Stabilization, Perfect Broad-spectrum Matching: Effectively inhibits the photodegradation of Avobenzone, improves the service life of UVA filters, realizes long-term stable broad-spectrum UVA/UVB protection, and optimizes the comprehensive sun protection effect.
• Breathable Thin Film, Superior Skin Feel: Forms lightweight, uniform and non-occlusive protective film, with inherent silicone silky smoothness, refreshing and non-greasy, no whitening or sticky feeling after application, greatly improving sunscreen comfort.
• Macromolecular Safety, Low Irritation: Polymer structure is not easy to penetrate the skin, avoids skin irritation and sensitivity caused by small-molecule sunscreen penetration, low allergenic and mild, suitable for sensitive skin sunscreen formulas.
• Wide Formula Compatibility & Strong Stability: Perfectly compatible with various organic sunscreen agents, silicone oils, ester oils and emulsified systems, stable formula performance, no precipitation or delamination, easy for industrial production and debugging.
Applications
• High Photostability Sunscreen Products: Long-acting outdoor sunscreen lotion & cream, high-power broad-spectrum sunscreen, water-sweat resistant sun care formulas.
• Anti-photoaging Skincare Series: UV-resistant anti-aging essence, light damage repair lotion, daily anti-photoaging protective skincare products.
• Sunscreen Makeup Base & Isolation: Refreshing sunscreen primer, UV-protective isolation cream, non-greasy makeup base with sun protection function.
• Functional Color Cosmetics with Sun Protection: Sunscreen foundation, UV-resistant BB/CC cream, long-wear sun-proof cosmetic formulas.
• UV-protective Hair Care Products: Sun-proof hair conditioner, light-damage resistant hair finishing lotion, colored hair color protection care products.
Certificate Of Analysis (COA)
Test Item | Standard Specification | Test Result |
Product Name | Polysilicone-15 | Compliant |
Appearance (25℃) | Colorless to pale yellow transparent viscous liquid | Colorless transparent uniform liquid |
Effective Content | ≥99.0% | 99.4% |
UV Absorption Peak | 312nm (±2nm) | 312nm |
Volatile Matter | ≤0.1% | 0.03% |
Ash Content | ≤0.1% | 0.02% |
Odor | Slight characteristic odor, no peculiar smell | Compliant |
Photostability | No significant efficacy attenuation after UV irradiation | Compliant |
Conclusion | Conforms to high-end cosmetic grade enterprise standards | Qualified |
Frequently Asked Questions (FAQ)
• Q1: What is the core advantage compared with traditional small-molecule UVB filters?
A1: Traditional small-molecule sunscreens are prone to photolysis, efficacy attenuation and skin penetration irritation; Polysilicone-15 adopts macromolecular silicone polymerization structure, with ultra-high photostability, no light decomposition failure. Its non-penetrating property ensures higher safety, and it has exclusive Avobenzone stabilization function, which is irreplaceable for high-stability broad-spectrum sunscreen formulas.
• Q2: What is the recommended formula addition ratio?
A2: 2%-5% for daily mild sunscreen, 4%-8% for outdoor high-power sunscreen, 1%-3% for sunscreen isolation and makeup base, 1%-2% for UV-protective hair care products, adjustable according to SPF value and photostability requirements.
• Q3: Can it be used alone for sunscreen formulas?
A3: Yes, it can be used alone for daily low-power UVB protection. For high-power broad-spectrum sunscreen products, it is recommended to compound with Avobenzone and other UVA filters. It can stabilize UVA agents while supplementing UVB protection, realizing full-band stable sun protection.
• Q4: Will it cause sticky skin or white cast in formulas?
A4: No. The product has inherent silicone silky and refreshing skin feel, low viscosity and good spreadability. It forms a transparent and thin film after application, no whitening, no stickiness, no greasy residue, effectively improving the dry and powdery defect of traditional sunscreen formulas.
• Q5: Why is it the preferred raw material for sensitive skin sunscreen?
A5: As a macromolecular polymer, it cannot penetrate the skin barrier, avoiding irritation and sensitivity caused by small-molecule sunscreen penetration. It is mild and non-allergenic, with stable and non-irritating film-forming properties, fully compliant with sensitive skin mild sunscreen standards.
• Q6: Does it support stable bulk supply and technical services?
A6: Standardized cosmetic grade polymerization production with stable UV absorption efficiency and photostability, sufficient inventory, supports long-term bulk supply and global export, and provides professional formula debugging, broad-spectrum sunscreen system optimization and photostability improvement technical support.
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