Long Layers & Wisps
Long layers of waves or curls are the best way to make your face appear thinner. Wisps also work great to highlight cheekbones and elongate the neck. Next time you go in for a haircut, consider adding layers or wisps if you wish to slim your face down.
If you don’t have time to make it to the salon, try styling your hair in a half ponytail, making sure to pull some strands out in front of the face. The half ponytail gives the illusion of two separate layers of hair.
However, you do not want to completely expose the sides of your face because this might make your face look wider. Instead, pull strands around your face that will work to accentuate the cheekbones (much like wisps would). If you want to avoid the half ponytail, try using bobby pins to pin strands of hair in different places. This will also create the illusion of layers.