Something in the wash, probably my son’s ground in dirt on his white socks, ruined my white denim skirt. I tried bleaching it out in the sun with lemon juice, but it did not help. I decided to try Solumel on it soaked in the bath tub. After forgetting about it for most of the day and going back to rinse it out, I found that it was white again! Dirty stains completely gone.