Hydrogen Peroxide Hacks You’ll Wish You Had Known Sooner
Remove Ink Stains From Clothes
It’s nearly impossible to rub ink out of clothing. At least, it would be if we didn’t have hydrogen peroxide. For light-colored clothing, you can soak a cotton ball in hydrogen peroxide and dab it on the infected area. Then wash your clothes as normal.

YouTube/eHow
YouTube/eHow
If this doesn’t work, your fabric may need a heavy-duty recipe. Create a solution of 50% hydrogen peroxide and 50% ammonia. The ammonia catalyzes the peroxide to work better. Only use clear ammonia, and don’t use it on wool or silk since the ammonia will eat through the proteins on both fabrics.