This laundry detergent was a pleasant surprise! My white t-shirt had gotten a little yellow from being washed too long, so I tried it just to see if it would last. I let it soak for half an hour and then washed it as normal. Once it dried, it was as white as new, with no yellow stains at all. It's also super easy to use: just pour it into a little water, stir, and let your clothes soak. No need to scrub too hard - perfect for lazy people