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POLYACRYLATE-1 CROSSPOLYMER.

Valuable CAS - / FILM FORMING, HAIR CONDITIONING, HAIR FIXING, VISCOSITY CONTROLLING

Polyacrylate-1 Crosspolymer is a versatile synthetic polymer engineered to create stable and aesthetically pleasing cosmetic formulations. It functions as a primary rheology modifier, thickener, and emulsion stabilizer, enhancing product texture and delivering a smooth skin feel. Additionally, it contributes to skin hydration by forming a moisture-retaining film.

Summary

film forming hair conditioning hair fixing viscosity controlling emulsion stabilizer thickener rheology modifier hydrogel

Science

Mechanism of Action

When hydrated in aqueous solutions, Polyacrylate-1 Crosspolymer forms a stable, flexible network of polymer chains, creating a hydrogel structure. This hydrogel precisely controls viscosity and optimizes rheological properties, while also retaining significant water volumes, directly contributing to skin hydration and refining product texture. Beyond its thickening capabilities, it acts as a stabilizer to prevent phase separation in oil-in-water systems, an emulsifier, and a film-former, creating a protective barrier on the skin that aids in moisture retention.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

Data regarding 'dusting' properties specific to Polyacrylate-1 Crosspolymer is not available; however, as a high molecular weight polymer primarily utilized for rheology control and stabilization in aqueous systems, it is not typically associated with dusting concerns relevant to active ingredient concentrations.

The Formula

Formulation

Solubility
Water
Optimal pH 2 – 8
0 7 14

Stability

This polymer exhibits robust stability across a wide pH range of 2.0 to 8.0, making it highly compatible with both acidic and neutral formulations. It maintains its integrity when combined with various potent active ingredients, including alpha hydroxy acids (e.g., glycolic, mandelic), hyaluronic acid, antioxidants, and retinoids, without compromising their efficacy or undergoing undesirable chemical interactions. Its stability extends across diverse temperature conditions, supporting extended product shelf life. The ingredient is amenable to both cold and hot processing methods and disperses readily in water at ambient temperatures.

Synergies

  • Combines with other thickeners (gums, pectins, cellulose derivatives) to further increase stability and viscosity.
  • Synergistically interacts with fatty alcohols (e.g., cetyl or cetearyl alcohol) to enhance texture and skin feel.

Conflicts

  • High salt concentrations (e.g., 1% sodium chloride) can reduce its viscosity.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
5%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed Polyacrylate-1 Crosspolymer, alongside 125 other acrylates copolymers, as safe for cosmetic use within established practices and concentrations, provided formulations are non-irritating. The ingredient is reported to have a high purity of 99%. While no specific SCCS opinion for Polyacrylate-1 Crosspolymer was found, a related polymer, Polyacrylate Crosspolymer-6, is not restricted in the European Union, with a reported maximum concentration of use up to 5%.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Polyacrylate-1 Crosspolymer is a valuable multifunctional ingredient, essential for formulating elegant textures, enhancing product stability across a broad pH range, and providing moisture retention without irritation.

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