I had an opportunity to test this product a few months ago and let me tell you it is amazing. I have been using a name-brand detergent that has no dyes or perfumes for everyday washing and after a few rounds I would have to boil the towels to revitalize them. I have not had to do do this once since I got my hands on the revitalizer. The towels came out whiter, brighter, and softer. I even did a round of the product with some old white socks, and they looked about as close to new as you could ask (my socks get dirty ). I have been using this for several weeks, and as a full time detailer I go through a lot of towels, this product helps keep my towels to the level and quality I demand for my details. If you go through a lot of towels, or just like your whites whiter, this is definitaly a great product to have in your laundry room.