Wash and brush your own hair. Tape-ins hair extensions will last longer if you apply them to clean hair. Before applying your extensions, wash and dry your hair as you normally would.
Make a part across your scalp. About one inch from the nape of your neck, use your finger or a comb to make a horizontal part. You will apply the extensions near the line made by the part.
Section off the top hair. You can use a hair tie or hair clips to secure all the hair above the part line. Just make sure it’s completely secured. You do not want any hair falling down and getting in the way while you’re securing your extensions.
Remove a thin portion of your hair from the non-clipped part. The idea is to sandwich a thin strand of hair below your part line between top and bottom extensions. The strand of hair you’re sandwiching needs to be very thin, about 1⁄8 inch (0.32 cm). This is so the adhesive tape on both extensions can stick together through the hair. Grab a very thin strand of hair from the hair below your part line about the length of one extension. Make sure the hair is thin enough your fingers can feel one another through the hair.
Measure the section. Before attaching the extension, use a cloth tape measurer to measure the section of hair that you parted. This way, you can determine how many pieces of the extension you’ll need to add along that section of hair. Do this for every section.
Attach the bottom extension under the thin portion of hair. Take your strand of hair and lift it up a little. Remove the strip covering the adhesive on the bottom extension. Press on the bottom extension underneath the thin strand of hair you’re lifting.
Secure the top extension. Take the top extension. After removing the adhesive tape covering that extension, press on top of your strand of hair. The top and bottom extension should stick together. Then press them together with pliers for a few seconds to secure them.
Repeat the process. Move across your side part, repeating this process until you have added all the extensions. The precise number of extensions you are adding depends on the size of your head.
