Hair is 100% virgin human hair meaning no chemical processing. 

• For a full install, the average person needs about 10oz (300g). 8oz is recommended for a partial install.
• Recommendation
  • 12''  to 14'' about 2 bundles is recommended
  • 16''  to   22''  about 3 bundles is recommended
  • 24'   to   30''  about 4 bundles is recommended.