For older, darker stains that laugh at lemon juice, you need to call in reinforcements. Look for a rust-specific stain remover (like Whink or Carbona). These are formulated to chemically dissolve rust without damaging fabric.
Always test on an inconspicuous spot first—trust me, you don’t want to learn this lesson the hard way. Follow the instructions exactly, and never use bleach, which can actually set a rust stain permanently. Yes, that’s a real thing—bleach is the enemy here.
What To Use To Remove Rust From Clothes at Gregory Ware blog
These products can feel like cheating, but who cares? Winning is winning. Your shirt comes out spotless, and you feel like a stain-busting wizard.