Illustrator edge fringing when drawing inside shape or using shape builder tool
Is there a way to avoid the frining or is it inevitable? What i wanted to do was to draw inside a circle using the blob brush tool. So i made the circle, selected it, then selected draw inside. I ended up with the fringing. So i tried to use the shape builder tool to trim away excess, but I still got it. Any ideas, please? Thank you for reading!

