The basic thing to consider in deciding which hairstyle is good for every person is the facial shape. There are 6 face shapes that are known to be oval, round, rectangle or oblong, square, heart, and diamond or triangle. The oval shape is considered to be a perfect shape for face. Its length is equal to 1 ½ times width; and any hairstyle would literally go well with this shape.
A round face is as wide as it is long; although sometimes the measurement has variations. For this shape, hair must be below the jaw line to make the face looks longer. Curly hairs must be long so it doesn’t add volume to the cheekbone. An oblong or rectangular shape is longer that it is wide. Women with this face shape are advised to try short to medium hair length. Like round, a square face is as wide as it is long, with a prominent square jaw line and hairline. For this particular shape, short to medium length of hair will look great. Adding wispy bangs will reduce the sharp edges of the face. The heart shape on the other hand has a prominent narrow jaw line and wide forehead or cheekbones. Long hairstyles, even chin-length ones are great for this shape.
Finally, the diamond or rectangular shape is just the opposite of the heart shape. The jaw line is prominent and the cheekbones and temples are narrower. Short hairstyles that balance the jaw line will look beautiful with this face shape. Actually, layered or tapered hair at the jaw would be perfect.