Tape-Ins "Sandwich" Installation Method Take a bundle of natural hair (thickness not exceeding the width of the tape);Tear off a piece of release paper from the tape;Stick it under the extension hair;Align another piece of tape from above and glue it;Press with pliers or fingers for 30 seconds. Key point: Your hair must be right in the middle of the tape, with no gaps. Use a splint at 80-90°C, clamp for 3-5 seconds, then clamp 1-2 times