I had washed my husband’s shirt. Dried. I was ironing it when I noticed a hard red ball about 1mm on his shirt. I tried to get it off with my nail but all that happened was a creation of a red mark. I tried to spot clean it with vanish bar soap. It did not work . I put it in the machine again . It’s still there.
Any ideas as to what it is and how I can get it off ?