This Package Includes a Shampoo, Press/Light Styling, & 150 Grams of 16” Body Wave or Straight Hair Extensions. If Upgrading Package To a Different Texture Select 1-16” Bundle of the Texture as an Add-On, if Upgrading Length Select Enough Bundles of the Different Length to Complete a Full Head, Complete Both Steps if Upgrading Both Length & Texture ( Both Must Be Done as Add-Ons) . I-Tips are Individual Pieces of Hair Extensions that Have a Keratin Bond at the Tip (1 gram per extension) and are Installed by Using Hair Extension Pliers and a Microbead to Install I-Tip Hair Extensions. We Highly Suggest Texture Matching Your Hair Extensions to Your Natural Hair to Create. a Seamless , Natural Looking Install. Install Lasts 4 Months and Maintenance is Needed Every 4 Weeks. I-Tip Hair Extensions are Reusable for up to 2 Years. (Typically 150-250 Grams are Needed to Complete a Full Head).