BUMP
Thought it would be a good idea to revive this thread and collect any new tips.
There are a few other threads with tips. This one had the best title going forward.
I just bought a bunch of deeply dyed clothes from gap (dark jeans and tees, and a fluorescent tee with a color transfer warning). I am now washing the dark jeans inside out in warm water with cold rinse cycle (not recommended, but warm is lukewarm because the cold water is really cold here). I added one new and one used (almost white) Shout color catcher which I already know will get really dark.
Next I will air dry completely, then soak in water with salt and vinegar for hours. The water will start warm until the salt dissolves, then become cold before I take the clothes out of the bucket.
Next I will rewash with shout color catcher.
For the flourescent pink tee, I started by soaking in vinegar salt water. (It's getting pink fast.) Then I will wash with shout color catcher. I really want to wear the pink tee with my new white jeans but the label said not to.
I may try it anyway depending on the color left on the shout color catcher.
So I really don't know if this is going to prevent color transfer. Have never had an issue but I haven't challenged it much.
I know most tips say to use cold water, but I used to live in Florida where there was no such thing as cold tap water, so I made a decision to use lukewarm water. The actual setting I use is called "warm/cold".
I also use high levels of water in my top load washing machine. No extra detergent (only the regular amount) - just extra water. That may contribute to my success in the past - don't know - but I have mostly bought gap denim in the recent past.
I am also washing and soaking all items inside out. Although I may turn them mid-soak. None of them were very expensive, so I can take a chance here and there.
I have not worn light colored purses against dark denim yet.
What I am most nervous about is color transfer to my white clothing, and my nude patent pumps. Maybe I won't wear the pumps with long jeans until they have been washed quite a bit. I think I will continue to use Shout color catcher with my dark and colored clothes, just to be safer. It appears to absorb dye with each wash.
BTW, I did this process before with no ill effects, but I am not that picky about my dark jeans. They just need to fit. All the jeans I currently wear have a little bit of spandex.
Does anyone else want to share more current tips?