Raw hair has never been altered in any way. It is cut directly from the donors scalp by shaving the head. The hair is then cleaned and wefted. The patterns in the hair is its original pattern. No steam process. When you flat iron the hair and wet the hair it will return back to its NATURAL state. Just like anyone else with NATURAL hair. No 2 bundles will be just alike being that they're 2 different donors from 2 total different people. It is a great investment rather than purchasing processed Chinese hair. Ever wonder why your body wave NEVER return? When any hair is wet it WILL go back to its NATURAL STATE.