Cadet Shirt

I am new to cadets and I wanted to handwash my shirt but I am a bit confused on the conditions I need to wash them in, as in do I wash it in very hot or cold water? Is there a specific type of detergent I shouldn’t use? and is there anything I should avoid doing as I don’t want to ruin my shirt.

Why do you want to hand wash it? I just stick mine in the coloured wash

Because another cadet told me that the shirt can run onto other clothes, is that true?

Total tosh. Stick it in the darks wash.