HB ZEN  is a synthetic, crosslinked copolymer used in cosmetics as a thickening, suspending, and emulsion-stabilizing agent.It is a white powder, often sold as Sepimax™ Zen (80-100% concentration), known for high electrolyte tolerance and creating, rich, velvety textures in gels, creams, and sunscreens.

Product/Ingredient Identifiers

INCI Name: Polyacrylate Crosspolymer-6

CAS Number: 1355508-95-0 (Aristoflex® Velvet)

Chemical Function: Viscosity controlling agent, emulsion stabilizer

Common Commercial Form: Sepimax™ Zen (SEPPIC)

Composition: Copolymer of ammonium acryloyldimethyltaurate, dimethylacrylamide, lauryl methacrylate, and laureth-4 methacrylate crosslinked with trimethylolpropane triacrylate.

Common Applications & Concentrations

Skincare: Face creams, serums, lotions, anti-aging products.

Sunscreen: Provides stable SPF formulation.

Uses: Gelling agent, rheology modifier.

Usage Concentration: Typically used in formulations at low percentages (often < 2% for thickening), though the raw material is provided as 80-100% pure polymer.