Common Name(s): Polyacrylate-9 crosspolymer,crosslinked acrylate gel polymer,suspension stabilising thickener

CAS Number: N/a

DESCRIPTION

What It Does: Provides transparent, elegant gel formation that suspends particles, pigments, and actives against sedimentation while flowing easily under dispensing shear — the essential combination for suspension-type toners and exfoliants.

Why It's Used: The yield stress of the crosslinked network suspends particles at rest while flowing under dispensing shear — this combination defines the performance of suspension-type skin care that cannot be achieved with linear thickeners.

How It Works: Crosslinked acrylate network above overlap concentration c* provides both elastic (g prime) and viscous (g double prime) character. at rest g prime > g double prime: gel-like, suspending particles. under shear g double prime dominates: viscous flow enabling dispensing. crosslinks prevent permanent deformation providing gel recovery after dispensing.

Typically Found In: Suspension toners,skin care,pigment suspensions

TECHNICAL DETAILS

Primary Category: Active ingredient – cosmetic active

Secondary Functions: Skin conditioning

Application Areas:

Typical Concentration Range: 0.1%–3%

SOURCING & ETHICS

Vegan Status: Conditional - supplier confirmation required

Halal Status: Unverified - supplier confirmation required

Source Notes: Commercially produced for cosmetic use. verify vegan/halal status with supplier. [audit 2026-07-29 rev2: the record's own source_notes does not assert a non-animal origin, or instructs the reader to verify with the supplier; "yes" asserts knowledge the record does not hold. determination requires shariah-panel sign-off.]

SKIN COMPATIBILITY

Irritancy Rating: 1/5 – very low

Comedogenicity Rating: 0/5 – non-comedogenic

Sensitivity Concerns: Well-tolerated by most skin types.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

Safety Profile: Good safety profile at recommended concentrations. ewg score: 1–2.

Works Well With: Standard skincare actives

Avoid Combining With: No known significant incompatibilities

SCIENTIFIC NOTE

Eu regulation 2023/2055 microplastic restriction: crosslinked insoluble acrylate polymers in rinse-off products may require compliance assessment. leave-on skin care applications may be exempt depending on polymer particle characterisation.

Last Verified: 2026-03-12

Primary Sources: Cosing database,polyacrylate-9 crosslinked gel network review