How can men make bangs thicker and denser (maybe my hair is a little sparse, and the bangs in front are almost one by one)

After bangs, it is not because the hair is scarce, but because it is too hard when cutting hair.

When the hair grows, tell the barber not to pull out the hair on the top of his head, just cut it short, and reduce the front curtain a little, about twice, so that your front curtain looks neat, without cracks and exposing your forehead.