How can I remove underarm sweat stains from a favourite T-shirt?

[SconehengeRevenge]

Any advice for getting armpit sweat stains out of a muxh loved tight fitting t-shirt, please

Not me. DD

Bicarb and white vinegar

Fairy liquid

You won't.

If it’s white, hydrogen peroxide and drying it in the sun.

Oxygen bleach (Lidl own brand is fine)..you need much more than they say- about half a cup full to a washing up bowl. The hottest water the fabric can take and leave to soak for a couple of hours, or overnight. Then wash as normal.

I use this but it takes a few goes
https://amzn.eu/d/0cL0MisR