For an authentic Emo look just follow the guidelines listed below.
Step 1: Grow your hair out. This will take time, but be patient and maybe give some other hairstyles a chance in the meantime. Allow the bangs to grow out until they reach a length that reaches just below the eyes. The rest of your hair should reach your shoulders, and for girls, it can be even longer.
Step 2: Go to the barber or a trustworthy friend for a professional cut. Tell your stylist that the hair should be layered in long, jagged sections. You will need some extra products to have the short spiky look, but first you will need to cut the back into a layered look, as well.
Step 3: Use a razor to cut the ends of your hair so that it creates jagged and narrow edges. You can do this every few months on your own by selecting some sections to shear with a razor.
Step 4: Go darker. Emo hairstyles are typically worn black, but if you don’t want to veer away from blonde too much, add black or dark red streaks.
Step 5: Get rid of any imperfections like kinks, curls or waves. An emo hairstyle should be straight and smooth.
Step 6: Thin your hair. This step should be done by a professional, as it can go wrong quickly if tried alone. If your hair is thicker than normal, you may want to consider making this your first step.
Step 7: Accessorize! Emo hairstyles are known for adding trimmings, barrettes and other sorts of hair accessories. For an edgy style, put the accessories in a random pattern.