Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer is a high–molecular weight synthetic polymer used primarily as a thickener/emulsion stabilizer, typically at low concentrations (~0.1–2%), with minimal skin penetration. Clinical and consumer patch-test data generally show a very low rate of irritation for this class of acrylate/taurate rheology modifiers, though occasional reactivity can occur in highly compromised or eczematous skin. Given its low functional reactivity but non-zero potential in severely sensitive populations, it fits best as very gentle rather than inert. Safety Notes: This polymer (often supplied pre-neutralized and used as a rheology modifier/emulsion stabilizer in products like Simulgel-type systems) is observed at very low levels (~0.05–0.2%) in thin serums/lotions and some rinse-off cleansers where only a small viscosity boost and stabilization is needed. In consumer leave-on gels, gel-creams, sunscreens, and high-slip “water gel” moisturizers, it is commonly used around ~0.3–1.5%, with the upper end (~2–3%) appearing in very high-viscosity gel textures and cold-process polymer-gelled systems where it functions as the primary structuring agent; higher levels are uncommon due to tack/texture limits and diminishing returns.