A miracle detergent!
I use Biz on yellowed vintage pieces and my sheer shower curtain that yellows over time. I put a cup of Biz in the bathtub, then fill it about 4 or 5 inches and let it soak until the yellowing and stains come out. It is amazing. I also use the same method to get the dirt and grime off my yoga mats. You can see it lift as the water turns dirty. It is incredible.
Rating: 5 stars