This is a polyester shirt from the Uniqlo airism range.
I like the shirt, but recently it got these spots on it? Is this from sweat?
This picture is after washing with lots of detergent.
Is there a way to get it out?
It seems to disappear after a while, but comes back after washing.
The shirt also smells ok, but after wearing it for a short while it starts smelling.
That sounds like salt from a wash that is not hot enough.
Can’t run it on higher temperature with these shirts though, they will get wrinkly and it’s permanent (label says max 30 deg c)