There actually are meaningful differences in detergent: pricier brands contain all sorts of things besides soap, such as proteases and lipases (proteins that br

There actually are meaningful differences in detergent: pricier brands contain all sorts of things besides soap, such as proteases and lipases (proteins that break down proteins and fats in foods and other dirt of biological origin), or colouring agents. It's not enough for me to make a difference, considering I don't spend much time in dirt. But if I had children, I'm sure I'd try different brands.