Surfactants can bring a significant impact on the viscose process. Pulp Reactivity Additive – Provides good wetting properties of the lye solution to the dissolving pulp, Delivers good and uniform penetration of the lye solution to the pulp Minimizes negative effects of the pulp resins and reduces fluctuations in reactivity due to change of pulp. Process Additive – Helps particles to be well dispersed and prevents formation of agglomerates, Improves spinnability. Modifier – Improves the tenacity of the fiber, Has low foaming properties in the spin bath. Spin Additive – Improves spinneret life, Reduces cleaning operations, Improves fiber quality.