Thank you for sharing your experiences on staining and cleaning.
Many have probably already had painful experiences with discoloration of clothing - you can't always only wear white clothes (even if I luckily like white and my 1:6 scale girls and ladies too).
Over many years I have gained experience in the durable dyeing of 1:1 scale clothing (for people). And then
fixing salt is used to fix the color and, if necessary,
supplemented with normal table salt (if the amount of fixing salt is not enough).
So I transferred these experiences to the 1:6 scale clothing. I first wash the clothes I bought with
liquid detergent for silk and wool (very mild detergent). Each item of clothing comes in an extra cereal bowl (for better observation). In
several rinses I watch whether the paint is still bleeding.
When little or no more color is bleeding out, I add table salt to the rinse bath to fixate and let it soak for a while. And then rinse one
last time with clean water and let it dry.
Once I was too impatient with a new pair of jeans - a big mistake!
I really wanted to know immediately whether the fit was right and immediately tried the jeans on a Phicen Lady. And her legs and feet (seamless) were instantly blue! Of course, I immediately washed the body with water and a mild shower gel and the discoloration became a little lighter.
Then I put the Phicen Lady in a tall cylinder with distilled water for about 2 weeks, which covered the discoloration. Fortunately, the color has been completely removed.
Caution - please do not use normal tap water (for soaking)!
In my first attempt with tap water (a long time ago)
the silicone skin turned reddish brown because the water contained traces of
minerals. If you leave the body in the water for a few days, it takes on the color of the minerals (even if the water looks clear). But I was also able to completely remove this discoloration with
distilled water. Lots of trial and error experience!