Biological washing powder is a laundry detergent that uses enzymes to convert tough stains into water-soluble compounds. Most powders contain three types of enzymes: lipases, proteases and amylases. Lipases dismantle oily stains and amylases attack starch. Proteases obliterate stains from blood, eggs and other proteins.
Biological washing powder is most effective in lukewarm water with a neutral pH level. Extremely acidic and basic environments hinder its enzymatic action. Hot water also reduces the enzymes' power.
In addition to stain-busting enzymes, many brands of biological washing powder contain optical brighteners and bleach. Brighteners reflect light and make white clothes look bright, crisp and new. They are only effective on white fabric and make colored clothing look dingy and old. Some people keep two washing powders on hand: one for whites and one for everything else. Others use a single detergent powder and add a whitening supplement when washing white clothes.
People with sensitive skin often have difficulty finding laundry detergent that does not irritate their skin. Many discover that natural, bleach-free biological washing powders are an excellent solution. Fragrance-free brands are the safest choice for individuals with eczema and other chronic skin problems. Thorough rinsing is also crucial because it reduces the risk of contact dermatitis. In areas with low water pressure, adding a second rinse to the wash cycle ensures that clothes come out clean and chemical-free. This strategy also helps individuals who have weak washing machines.