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Hard water contains high levels of these cations. Anionic surfactants are the most common surfactants in laundry detergents. emulsifying oil and clay soils, fabric softener residue, and are high sudsing. ether sulfates such as sodium lauryl ether sulfate (SLES). (charged particles) in hard water.
In liquid laundry detergents, liquid or even solid surfactant are blended into the liquid detergent. There is usually a limit on how much liquid surfactant can soak into powder or granular solids before making the solid detergent mushy. More liquid surfactant can usually be blended into a liquid detergent.