Sodium Polyacrylate: The Super Absorbent Polymer Transforming Cosmetic Formulations

In the ever-evolving world of cosmetics, ingredients that enhance product performance, stability, and sensory appeal are in high demand. One such standout material is ポリアクリル酸ナトリウム (CAS No. 9003-04-7), a 高吸水性ポリマー（SAP） valued for its remarkable ability to retain moisture, improve texture, and stabilize formulations.

What Is Sodium Polyacrylate?

Sodium polyacrylate is the sodium salt of polyacrylic acid, known chemically as 2-Propenoic acid, homopolymer, sodium salt. It is widely used in cosmetic and personal care applications due to its superior water-absorbing capabilities—absorbing 100 to 1000 times its own weight in water.

Basic Technical Profile

How Does It Work?

Sodium polyacrylate absorbs water through osmotic swelling. When it comes into contact with moisture, sodium ions in the polymer attract water molecules, causing the polymer to expand and form a gel-like network. This unique behavior allows it to lock in water and enhance hydration in cosmetic formulations.

Functions in Cosmetic Formulations

In cosmetics, sodium polyacrylate serves several essential purposes, each contributing to product performance and sensory feel.

Functional Properties in Formulations

These properties make it highly valuable in products such as:

• Moisturizing creams and lotions

• Body care formulations

• Hair gels and styling products

• Serums and primers

• Sheet masks and other water-based treatments

業界を超えたアプリケーション

Beyond cosmetics, sodium polyacrylate is used in multiple industries:

• 農業: As a water-retaining resin to improve soil moisture

• パッケージング: To prevent moisture damage in sensitive products

• インダストリアル: In oil drilling and wastewater treatment applications

This versatility highlights the polymer’s ability to perform in diverse environments.

Formulation Compatibility and HSP Insights

In formulation science, Hansen Solubility Parameters (HSP) help ensure sodium polyacrylate is compatible with other ingredients. This method supports:

• Efficient ingredient matching and solubility testing

• Optimized delivery of active substances

• Faster product development cycles

• Stable dispersion of polymers in skin care or nail products

結論

ポリアクリル酸ナトリウム is a high-performance ingredient that combines moisture absorption, texture enhancement, and formulation stability—making it a go-to choice in the creation of premium cosmetic products.

Whether you’re formulating a hydrating serum or designing a long-lasting styling gel, sodium polyacrylate delivers reliable results with a proven safety profile.

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