Our vietnamese hair is 100% real human hair (no henna, no syntheticartificial hair), 100% virgin hair (one woman's hair), 100% natural hair (have full cuticle, original from women, not re-treated with chemical, not re-dyed, not re- our vietnamese raw hair can be used very easily:for bleaching and dyeing process, to changed texture from straight to wavycurly or vice versa, to manufacture wigs or hair extensions, for other applied in fashion industry, beauty industry. Depending on production technology and usage purpose.For more information, please contact me.