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POLYACRYLATE-4.

Valuable CAS 228863-31-8 / OPACIFYING

POLYACRYLATE-4 is a synthetic polymer extensively utilized in precision skincare for its multifunctional properties. It enhances the textural integrity of formulations by thickening and stabilizing emulsions, while simultaneously benefiting the skin by creating a protective, hydrating film.

Summary

Thickening agent Emulsion stabilizer Film-forming agent Texture enhancer

Science

Mechanism of Action

As a polyacrylate, POLYACRYLATE-4 functions primarily to augment formulation viscosity, thereby improving product texture in water-based systems. It actively stabilizes emulsions, preventing phase separation. When applied to the skin, it establishes a thin, flexible polymeric film that serves as a protective barrier, effectively mitigating moisture loss and contributing to a perceptible smooth and moisturized cutaneous feel.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

POLYACRYLATE-4 is typically incorporated into formulations as a liquid or gel ingredient for its textural benefits, not applied as a powder by consumers. While powdered forms carry an inhalation risk during industrial handling, this does not translate to consumer 'dusting' concerns in finished skincare products.

The Formula

Formulation

Solubility
Water
Optimal pH 6 – 9
0 7 14

Stability

Polyacrylates, including POLYACRYLATE-4, exhibit stability in aqueous solutions within a pH range of 6.0 to 9.0. Formulation below pH 4.0 may induce gelling, with dissolution occurring around pH 2.5. Stability in water-in-oil emulsions can be enhanced through the inclusion of water-soluble thiosulfate, thiourea, nitrite, or thiocyanate.

Conflicts

  • Certain metal ions, such as calcium hydroxide and magnesium hydroxide, can induce precipitation in aqueous solutions.
  • Large quantities disposed of improperly can cause severe clogging in drainage systems.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

While a specific CIR assessment for POLYACRYLATE-4 was not directly available, the Cosmetic Ingredient Review (CIR) Expert Panel has deemed related polyacrylates like Sodium Polyacrylate and Acrylates Copolymers safe for cosmetic use. Its large polymer size minimizes skin penetration, contributing to its inherently low irritancy potential. However, the presence of residual acrylic acid from manufacturing could potentially induce skin rashes.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

POLYACRYLATE-4 is a valuable ingredient for optimizing formulation elegance and enhancing skin comfort across all skin types, exhibiting a low risk of irritation or comedogenicity.

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