It’s on the bottle: polylignosulfonates

https://www.sciencedirect.com/science/article/abs/pii/S0169131717305355

The lignosulfonate is the by-product of wood and paper processing industry, categorized under lignin based organic polymers, and normally considered a waste. It was found that, with increasing lignosulfonate content, the critical hydraulic shear stress of the treated dispersive soil samples increased, and the coefficient of soil erosion decreased