1)by color, each bundle of raw hair from one donor,so color slightly different each bundle,
normal hair each bundle same color , many raw hair with light brown tone, color change from 1b to color 3 or color 4,
2) raw hair color more pure ,no shine red hair , normal hair with red hair more or less,especially under sunshine,
3) raw hair not very very silky , other hair very smooth and silk,
4)raw hair could hold curl easily,other hair cant hold curl
5)raw hair easy dye to light color ,like #613 color or #60 , other hair not easy dye to light color ,they can dye to #27 most light color ,
6)raw hair is cuticle aligned hair ,
when you feel hair from root to end,it is smooth ,
when you feel hair from end to root,you will feel a stop feeling ,not smooth ,
7)use a knife to get some hair powder from hair surface,
check powder color，if powder color is white，hair is raw hair，
otherwise powder color is red or black，it is not raw hair，