Double-check that the sizes of the adhesive tape and denim piece match.

Plug in the clothing iron and wait for it to heat up. Set it to medium heat.

Apply the hot clothing iron to the fabric tape that is covering the frayed section of the jean stud buttonhole.

Hold your iron to the tape for approximately 10 seconds. If the tape is not sticking after you apply heat for 10 seconds, repeat this step.

Once finished, the tape should lie flat.