The Photography Formulary Clothing Stain Remover comes pre-mixed for your convenience this product works on developer and fixer stains on most materials.
This product has been known to take stains out that were several years old. Testing on a particular stain and fabric combination is recommended before using.
My daughter ruined many clothes in photography class and I tried everything and was about to toss all of them into the garbage but bought this as a last effort. It instantly took the stains out - vanished and saved me hundreds of dollars in the cost it would have taken me to buy her all new things. Miracle
One word...AMAZING! I took a photography class and was not told that the developer could stain my clothes, so I wasn't extremely careful in the darkroom. I ended up staining 4 of my new shirts in class. I tried washing them with different stain removers from the grocery store, but nothing worked. I looked online and ordered this product, tried it and was blown away at how quickly the stains disappeared before my eyes. Even stains that were there for months came out without a problem. Best product ever!!!