How to remove a stain from a white shirt?

With a brush or comb, carefully swipe or lift away any large pieces such that you don’t smear them worse into the garment. 

Immediately treat the stain with water or stain remover solvent.  The sooner the better.  If you can’t get your hands on a stain remover pen, we recommend a Tide Pen, try dishwashing detergent, lemon juice, vinegar, or seltzer water. 

Dab solvents on the stain with a light touch. Pressure can force the stain deeper into the fibers of the garment. 

Rinse and repeat.