Unfortunately, unlike vinyl, the holes do not close up when heated. My advice to you would be to take the hair out about an inch away from where you see the holes and redo the silicone. It will take some work, as you will need to mix your parts A and B to ill the holes and re-sand the head to get it smooth and repaint to match the skin tone. But since you will be rooting, hopefully, once you re root, it will look good. I wish I could help more.
best to use the smallest needle possible, and be sure not to use a forked needles on silicone, as these will leave a hole!