How to Trim Bangs

Trimming bangs
Fringe Cutting & Trimming Instructions
Whether or not a particular hairstyle includes bangs (known professionally as 'fringe') is largely a matter of what the person wearing the style prefers.
Throughout the decades of modern fashion, bangs have been an 'on-again, off-again' proposition, and many people like to follow the trends. Your stylist, however, will generally have a different take on whether or not to include bangs in your particular hairstyle. This decision is based on what you need to look your best.
Bangs are useful in styles for people who have particularly high foreheads, or whose foreheads are particularly broad. And in some cases, I've known women who had scars on their foreheads to wear bangs to cover the scar. There are countless reasons, and as said before, the biggest reason is preference.
You want bangs. That's good enough, but you need to know some simple rules about bangs, about how to avoid cutting them too short, and about hair in general, before you grab those scissors.
The Golden Rule of Bangs:
"Once you cut it, it's gone." Always remember that you can cut more off, but you can't add it back, so you must be sure of where you're cutting. You always want to cut your hair when damp, because cutting dry hair causes it to fly everywhere, and can fray the ends in some cases. But, if you have curly hair, your hair can shrink up to 4 inches when it dries. Even straight hair can shrink as much as one-and-one-half inches.
This means that when you (with wet, curly hair) cut your bangs to the mid-length of your nose you could easily end up with a puffy little patch of curls on your brow, instead of the bangs you were hoping for. Even straight hair can shrink enough to leave you looking unfortunate if you aren't careful.
Generally, the bangs area should extend to a point near the outer corners of the eyes. There are also a number of shapes the bangs area can take, you'll need to consider these when you're preparing to make the cut:
The half-moon shape curves toward the face, is about one-inch deep in the center of the forehead, and tapers to points on the outer edges. It's the most common shape for the bangs area.
To mark out the half-moon bangs area. Comb your wet hair straight back from the face, start in the center of the forehead about one-inch back from the hairline, and slice out a small section of hair and comb it forward. Carefully carve the crescent shape to the left and then to the right.
Hair with half-moon or crescent bangs
Once the crescent shape has been established, comb the bangs straight down onto the face, and determine the length you want for your bangs. Snip a small section to give you a guide in the center of the bangs. Next, comb the bangs upward and hold them between the index and middle fingers of the non-cutting hand, gathering them together toward the center of the forehead.
The bangs section should be about one-to-one-and-one-half inches between the fingers and should fan out to the scalp. Once you have the bangs combed together, cut them off in a straight, horizontal line. This will give you a smooth gently curving bangs line with a little bit of tapering.
Nex Page (Rectangle & Triangle Bangs)