“And all our righteous deeds are like a filthy garment;” (Isaiah 64:6 NASV) Remember the old slogan, “whiter than white?” For years, laundry soap manufacturers have used a little trick to keep clothes looking white, and it has nothing to do with making them cleaner. Lighter and white clothes in particular have a tendency to yellow as they age. Over time, it can leave the impression clothes aren’t clean. To get around this, manufacturers started adding a substance to the detergent called “Florescent Whitening Agents” (FWAs). A whole range of chemicals fall into this category — including such tongue twisters as tetra-sulfonated triazole-stilbenes. The first of these FWAs was discovered in 1929, which gives you some idea how long this has been going on.