The difference between a biological and a non-biological detergent! It seems as though everyone is confused about “The difference between a biological and a non-biological detergent?” Some people insisting online that biological powders contain optical brighteners… what? and some that non-bios are better for the environment? Whilst other forum posts report bio formulas are more environmentally friendly, and that non bio’s the only safe washing formula for sensitive skin and so on… Muddled? well, we’re…