Does not contain bleach. Contains enzymes with low temperature stain dissolving feature. It is effective at any temperature. It is a powdered laundry detergent with adjustable foam and without bleach. It can be used safely in white and colored laundry, it does not fade the color of colored laundry. It can be used with oxygen or chlorine bleach on whites. It is effective at any temperature. It easily removes the most difficult stains with the enzyme it contains. The active ingredients in its content are biodegradable in nature.