Our extensions will add volume, fullness, softness and overall luxury to your install. You may color, flat iron, curl, shampoo and reuse your hair. Each pack comes with an average of 100 grams (40 pcs). For a natural to semi full look, we recommend 150 grams. Most customers purchase 2 packs for their install and replacement tape so that they can reuse their tape in extensions. Replacement tape is available on our website.