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Highly stable, water-based silicone elastomer suspension with excellent shelf life.
Delivers soft, velvety skin feel and improved slip without greasiness.
Compatible with a broad range of cosmetic formulations, including low-pH and high-electrolyte systems.
Provides effective sensory enhancement and film-forming properties in rinse-off and leave-on products.
Non-ionic surfactant-free system ensures compatibility with cationic polymers and active ingredients.
Facial moisturizers and anti-aging creams.
Body lotions and nourishing body butters.
Shampoos and conditioning treatments.
Sun care formulations including after-sun gels and SPF lotions.
Makeup primers and BB/CC creams.
| Chemical Type | Dimethicone-based silicone elastomer in aqueous suspension |
| Product Form | White to off-white viscous liquid |
| Appearance | Opaque, homogeneous suspension |
| Primary Applications | Personal care and cosmetic emulsions |
| Key Features | Sensory enhancement, film formation, compatibility with diverse formulation matrices |
| Benefits | Improved spreadability, silky after-feel, reduced tackiness |
| pH Range (as supplied) | 5.0 – 7.0 |
| Recommended Use Level | 1 – 10% w/w in final formulation |
Q1: What is the primary function of Dow Corning 9509 in cosmetic and personal care formulations?
A: Dow Corning 9509 is a silicone elastomer suspension designed to provide sensory enhancement, including improved slip, soft focus effect, and skin-smoothing benefits. It functions as a rheology modifier and texture enhancer, helping to reduce tackiness and deliver a velvety, non-greasy after-feel in leave-on and rinse-off products.
Q2: Is Dow Corning 9509 compatible with common emulsification systems used in O/W and W/O emulsions?
A: Yes, it demonstrates good compatibility with a broad range of surfactant systems, including nonionic, anionic, and amphoteric emulsifiers. It is typically incorporated into the oil phase or added post-emulsification under gentle mixing, depending on the formulation architecture and desired particle dispersion.
Q3: How should Dow Corning 9509 be incorporated into a formulation to ensure optimal performance?
A: For best results, disperse the suspension under low-to-moderate shear (e.g., using a propeller or anchor mixer) at temperatures below 70 °C. Avoid high-shear homogenization unless validated, as excessive energy may affect particle integrity. Pre-dispersing in a portion of the oil phase prior to emulsification often improves uniformity.
Q4: Does Dow Corning 9509 require preservation in aqueous-based formulations?
A: While the silicone elastomer itself is microbiologically inert, the aqueous carrier phase in the suspension contains water and may support microbial growth. Therefore, appropriate preservative systems should be selected and validated for the final formulation, especially in products with significant water content and neutral pH.
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