The first piece I bought was a colour 1B and the knots were very visible. This was not so much an issue since I don't expose my hairline.

I'm just about ready to order my second and even though my results with my first were fantastic- I will be ordering this next one in a blonde colour 22 and then dye it myself to match my own hair. This is to completely eliminate the knots and give me the option to expose the hairline should I wish to.