Shampoos often use a variety of surfactants and emulsifiers. Each component performs its own function. Using several simultaneously helps achieve softness, good lather, smooth hair, and product stability over time. Reducing the amount of nonionic surfactant or emulsifiers in your product can affect its properties. For example, the shampoo may lather less, rinse away dirt less effectively, or become less stable. It all depends on what functions you want to preserve and how the formula is tested.