The best laundry detergent - which laundry detergent works ...- ariel washing powder washing powders that came lemon powder recipes ,The Good Housekeeping Institute guide to choosing the right detergent in the right form - whether tablet, powder or liquid. Which is the best type of laundry detergent for the job? We have the ...But does it rot your shorts?: Who invented washing powder ...A There do seem to be genuine breakthroughs in the evolution of washing powders. Optical brighteners, enzymes and the trend to produce powder for low-temperature washes are probably the best examples.