Dr. BeckmannIntensive black cloths, for intense black and smooth fibres, 6 cloths

This stuff is AMAZING! I have a lot of black clothing, especially scrubs, which get washed, A LOT. You throw one of these sheets in the washer (2 for large loads) and your black clothes look new again. It doesn't stain your washer, definitely worth the money. I will buy again.

It works! I didn’t believe it would work and bought it just to try it. I was impressed!

It really enhances the color of the fabric — it’s not a dye, but it improves

Works well, not for all fabrics types, no english instructions , made the cloth darker

I bought these thinking that they would help retain the color of my black clothing. I wear a LOT OF BLACK, but since I don’t speak or read German, I’m at a loss as to how much to use these things. I’ve used them in a couple of loads of dark clothes and they haven’t hurt anything, I’m really not sure if they’ve helped either. My bad for ordering this product. I guess I was hoping for some clue in English to help me navigate this product. I’m going to stick to products with English instructions instead of just trying to wing it on my own. At the end of the wash cycle, the sheet, sans black dye sat in the bottom of the washing machine.

Funciona muy bien. Puede usarse 1 vez al mes. Resultados visibles y durables

I was very surprised by the large number of positive reviews. I used this for jeans and used it twice thinking maybe I did something wrong, but as a result I didn't see any effect at all

Sirven para que durante el lavado no se destiñan las prendas negras y preserven su color por mas tiempo, llevo años usándolas, sigan las instrucciones y las van a amar.