Neutralizes alkalinity. Concentrated and for use in all types of laundry applications, improves softness and fluff to all washables while reducing harshness and hardness from detergents high in alkalinity. Regular usage helps in ironing, drying, and reduces static cling in cottons, woolens, synthetics, and all other washable fabrics. Soft & Sour promotes easier ironing, softer clothes, wrinkle free perma- press, and helps keep fabrics looking new and lasting longer. No residual build-up and non-yellowing formula.