I've been using this stuff for years for my clothes and love how it keeps them all dark. Mine did arrive a bit clumped up but it was easy to break apart with just my hands (unlike a previous tub I bought in a physical store that I had to chisel away at).My work uniform is black and working in law enforcement, I have to make sure my uniform is in tip top shape. I noticed my pants were starting to fade pretty bad, and using this has definitley made a difference in slowing down the fadingIt works,This product works great for getting dirt/dingy out of jeans and sweatshirts.This is what I use and I will be ordering moreDidn't see any difference between the black product or the regular one.This product came in a large box with lightbulbs I had also ordered. There was no packaging inside the box to stabilize the products and prevent excess movement. I thought that was super unusual. Then I noticed the detergent wasn’t sealed. It had been wrapped, but the plastic seal you tear off when you buy it in the store was already torn off. It appeared as though it had been opened and slightly used. Otherwise, I like the product. Works well and smells subtle and nice.Great for dark clothes.El producto llegó bien empacado, sin sellos pero creo que es la presentación normal, la cuchara medidora estaba rota y la ropa salió algo blanquisca, que es lo que evita de acuerdo a la etiqueta