Ultrez 20 is a hydrophobically modified acrylic polymer, with the INCI name Acrylates/C10-30 Alkyl Acrylate Crosspolymer. It appears as a white, fluffy powder and is classified as a high-performance rheology modifier and suspending agent in cosmetic formulations.

Its molecular structure, designed with hydrophobic modifications, offers high clarity and moderate electrolyte tolerance. A key distinguishing feature is its "long-flow" rheology: it exhibits higher viscosity under low shear (preventing dripping) but flows smoothly upon application, delivering a lightweight, non-tacky feel. Its self-wetting properties allow quick dispersion in water to form clear gels, reducing dust and production energy use compared to traditional carbomers.

• Recommended Dosage: 0.2%-1.0% (adjust by desired viscosity).
• Clear Gels: Use 0.5%-0.8% for optimal transparency and texture.
• Lotions/Sunscreens: Use 0.1%-0.3% for stabilizing emulsions.
• Precaution: Avoid direct mixing with strong cationic surfactants (e.g., quaternary ammonium salts). Dilute cationic ingredients first before slow addition.