This is a little known secret my grandmama tought me back when i was a young lass. If you soak your jeans in cranberry juice overnight then wash them in the morning, the colour will remain as new for up to 18 months.
hope this helps,
cheers,
Sheryl.
So sorry, that was my naughty grand-daughter logging onto my account. I have no clue on how to fix your problem. definitely do NOT soak them in cranberry juice.
Sheryl.