Cassia Angustifolia Seed Polysaccharide

Cassia Angustifolia Seed Polysaccharide is a film-forming, humectant polysaccharide used at low concentrations (typically ~0.1–2%) to improve hydration and skin feel. As a high–molecular weight sugar polymer, it is generally non-reactive and not a common irritant in patch testing, with irritation more likely due to formula context or contamination rather than the polysaccharide itself. For highly sensitive or eczematous skin, rare intolerance to film formers is possible, so it is best categorized as very gentle rather than completely inert. Safety Notes: In commercial leave-on skincare (serums, moisturizers, eye products), Cassia Angustifolia Seed Polysaccharide is commonly used as a film-forming/instant tightening and smoothing polymer at low levels around 0.05–0.3% to provide a subtle sensory and soft-focus effect without tack. Higher-strength consumer products marketed for “instant lift” or “firming” effects and some peel-off/film-forming masks use it more aggressively, typically ~0.5–2.0%, with ~2% representing the upper end before viscosity, tack, and film brittleness become limiting; rinse-off products generally sit toward the low-to-mid portion of this range.