We've tested and tried human hair vendors for the past year, and these are our faves so far! Our vendor has more than a decade in the hair industry, and uses only 100% Unprocessed Virgin Human hair that can be dyed and bleached into any colors evenly with no mixed colors or dark strands. The hair quality can be dyed or bleached and even after several times dyeing, the hair will keep its bouncy and gloss, frizz-free hair. The bundles are 100% natural and can tolerate heat and styling. Keep good care of your extensions and these can last for a very long time.