Buyers should prioritize the Active Matter Content (Surfactants), which typically ranges from 10% to 25% for standard laundry detergents; higher concentrations offer better cleaning efficiency but higher costs. Additionally, verify the pH levels (neutral pH 7-8 for delicate fabrics, alkaline pH 9-11 for heavy-duty industrial degreasing) and ensure the inclusion of enzymes (protease, amylase, lipase) for targeted stain removal. For liquid variants, check the viscosity and stability to ensure the product does not separate during long-term storage.