I do not know if you can see the red string in the picture. ( If you cannot see the string, try clicking on the picture.) I crocheted that into my doily. I do not know where I got the string. Maybe I got it from my clothes. I do not know. I often find hairs in my doilies, too. I wish I had notice that I crocheted the string into the doily before I finished the doily!
Here is another picture of the doily:
Do you ever found hairs and strings into your projects?
I find hairs in my work all the time, and it drives me crazy because they're impossible to pull out!!