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TAPIOCA STARCH POLYMETHYLSILSESQUIOXANE.

Valuable CAS 68989-12-8 / ABSORBENT, SKIN CONDITIONING, VISCOSITY CONTROLLING

Tapioca Starch Polymethylsilsesquioxane is a sophisticated polymer derived from tapioca starch, engineered to elevate the sensory profile and performance of skincare formulations. It efficiently absorbs excess oil and moisture, delivering a refined, matte finish while simultaneously imparting a luxurious, silky texture to products and skin. This ingredient also contributes to stable product viscosity and overall skin conditioning.

Summary

Absorbent Sensory Enhancer Skin Conditioning Agent Viscosity Controlling Agent Texture Enhancer

Science

Mechanism of Action

This ingredient functions primarily through its advanced absorbent capacity, efficiently binding to and reducing excess sebum and moisture on the skin's surface, resulting in a smooth, non-greasy feel. It acts as a potent sensory enhancer, transforming the tactile experience of cosmetic products by mitigating tackiness, greasiness, and gloss, often serving as an effective talc alternative. Furthermore, it contributes as a skin conditioning agent, maintaining skin health, and a viscosity controller, influencing product rheology.

Research

Clinical Evidence

High confidence
Effective range 1–95%
Optimal

1%

Key findings

  1. 01 Proven effective in enhancing texture and controlling shine in diverse applications including powders, lotions, creams, and dry shampoos.
  2. 02 Recommended concentrations for optimal performance in emulsions.
  3. 03 Typical levels utilized for achieving desired product viscosity across various personal care items.

Transparency

Dusting Analysis

Commonly dusted
Red flag below
15%

As a fine powder used in applications like dry shampoos and body powders, Tapioca Starch Polymethylsilsesquioxane has a documented inhalation risk, particularly from repeated exposure in aerosol products (up to 15%) or high-dust environments. The primary concern is potential lung overloading if particles are within the respirable size range. This risk is typically mitigated through industrial best practices such as closed systems for handling and the use of binding agents in formulations.

The Formula

Formulation

Solubility
Both
Optimal pH 5 – 6
0 7 14

Stability

The ingredient demonstrates broad pH tolerance and stability. Although technically insoluble, it is miscible in water and swells in hot water, exhibiting low water solubility. Its hydrophobic modification significantly enhances compatibility with a wide array of oils, emulsifiers, and surfactants. For processing, it can be directly incorporated into the water phase without heat, or post-added during the cool-down cycle at temperatures at or below 45°C. Proper grounding is essential during mechanical handling of the powder to prevent static electrical discharges.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
95%
Sensitization risk Low

Tapioca Starch Polymethylsilsesquioxane is considered safe for cosmetic use, deemed non-toxic and non-comedogenic. In vitro studies have confirmed its non-irritating nature for both skin and eyes. The primary safety consideration relates to potential lung overloading from repeated inhalation exposure, particularly in aerosol spray products (at concentrations up to 15%) or high-dust powder environments. This concern is managed by employing appropriate industrial handling measures and formulation strategies, such as incorporating binding agents in powders.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

Tapioca Starch Polymethylsilsesquioxane is a highly valuable, multi-functional ingredient that significantly improves the sensory experience and performance of skincare and cosmetic formulations across all skin types, while effectively managing oil, shine, and texture.

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