White Under Arm Deo Marks

[Rexy]

My DH won't wear the type of deo that doesn't leave white marks.

So how do I remove them ? Tried Vanish spray but it doesn't really work.

Any other suggestions pls ?

BUMP

he needs to let it dry before putting his top on.

I read somewhere warm white vinegar is the answer. I haven't tried it but I doubt it would do any harm.

Thanx, will investigate further.