With over 15 years of experience in the raw hair industry, we know the ins and outs of everything. We work with small family based factories and this allows us to control and maintain the quality process. Sisters Crew Hair has absolutely NO synthetic fibers, NO animal hair and NO bad smell! Just PURE HAIR! Infact, our hair smells so good, it will blow your mind! Each Sisters Crew bundle is conditioner hand washed before we ship them to you.