Aluminum Stearates

Product Description

Aluminum Stearates are multifunctional cosmetic excipients widely used as viscosity-controlling agents, suspension aids, and formulation stabilizers in oil-based and anhydrous systems. Manufactured under stringent quality standards, our Aluminum Stearates provide reliable batch-to-batch consistency, excellent processing performance, and direct factory supply for global cosmetic manufacturers.

As aluminum salts of stearic acid, these ingredients form structured oil networks that improve rheological behavior and enhance the stability of cosmetic formulations. Their oil-gelling and suspending properties help maintain uniform dispersion of pigments and insoluble materials while reducing sedimentation during storage. These characteristics make Aluminum Stearates particularly valuable in color cosmetics, sunscreens, ointments, lip products, and specialty anhydrous systems.

With increasing demand for high-performance formulation aids that improve both functionality and sensory quality, Aluminum Stearates remain a trusted choice for formulators seeking enhanced structural integrity, optimized texture, and long-term formulation stability across diverse cosmetic applications.

Product Specification

• INCI Name: Aluminum Stearates
• CAS No.: 637-12-7
• Chemical Description: Aluminum salts of stearic acid
• Function: Viscosity controlling agent, suspension agent, and formulation stabilizer
• COA: Certificate of Analysis available upon request and supplied with each production batch
• Appearance: White to off-white fine powder
• Odor: Characteristic
• Solubility: Insoluble in water; dispersible in oils and suitable for anhydrous systems
• Suggested Usage Level: 0.5–5.0%, depending on formulation requirements
• Storage: Store in a cool, dry place in tightly closed containers away from moisture and direct sunlight
• Regulatory Status: Commonly used in cosmetic applications; verify compliance with local regulations before commercial use

Key Benefits & Applications

• Viscosity Control: Forms structured oil networks that improve consistency and rheological behavior in oil-based formulations.
• Suspension Efficiency: Helps maintain uniform distribution of pigments and insoluble particles throughout product shelf life.
• Phase Stability: Reduces sedimentation and minimizes phase separation to support long-term product integrity.
• Texture Enhancement: Contributes to smooth application and optimized sensory characteristics.
• Processing Flexibility: Suitable for a broad range of oil-based and anhydrous manufacturing processes.
• Premium Applications: Ideal for color cosmetics, sunscreens, ointments, lip products, sticks, specialty skincare systems, and other anhydrous formulations.

Formulation Guidelines

Aluminum Stearates are typically incorporated into the oil phase to improve viscosity, suspension performance, and structural stability.

• Suggested Use Level: Typically 0.5–5.0%, depending on target viscosity and formulation requirements.
• Processing Recommendation: Pre-disperse into the oil phase and heat under moderate agitation until Aluminum Stearates fully activate, forming a structured gel network for optimal rheology and suspension efficiency.
• pH Compatibility: Primarily intended for anhydrous and oil-based systems.
• Application Types: Suitable for foundations, sunscreens, ointments, lip products, sticks, pigment dispersions, and other anhydrous cosmetic formulations.
• Compatibility: Demonstrates broad compatibility with vegetable oils, esters, waxes, pigment dispersions, and other ingredients commonly used in structured oil systems.
• Stability: Supports stable rheological performance and suspension efficiency throughout the intended product shelf life.
• Synergy: Combine with Polyhydroxystearic Acid to enhance pigment suspension, improve structural stability, and optimize rheology in anhydrous and oil-based formulations.