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.
Might be soap residue? Try an extra rinse cycle. Sometimes I get residue that also comes off by rubbing a pantyhose (could try a thin sock) on it.
The extra rinse cycle was also my thought.
It might be, but my newer shirts in the same wash don’t have this at all.
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)