I have always washed my shirts together, the only time I do not is when I hand-wash my white shirts and white-collar shirts separately because they need longer to clean.
The only time I did have an issue with mixing colours is when I put too much washing powder and ran the washing-machine at a high temperature. The white section of a black/white polo turned blue.
The only time I did have an issue with mixing colours is when I put too much washing powder and ran the washing-machine at a high temperature. The white section of a black/white polo turned blue.
