Non-biological washing powder cleans clothes just like biological washing powder, but without the enzymes that can cause problems for people with sensitive skin. If there are stains in the laundry, the water should be set to a higher temperature setting.
Biological detergent contains enzymes that break down stains. It works at lower water temperature settings than non-biological detergent. The enzymes act enhance the detergent's stain-fighting ability.
Non-biological detergent is preferred by parents washing baby clothes. Non-biological detergents are also preferred by people whose skin is irritated by biological detergent. It is less irritating to sensitive skin, but it still has powerful stain fighters.