... 2.high tech hair care product 3.black hair with herbal,just need 5-8mins 4.effective,safe,convenient black hair ... hair shampoo,hair dye,hair color GUANGDONG RUIHU FINE CHEMICALS CO.,LTDWe are manufacturer which produces hair care products,hair care ... generation hi-tech hair blackening product by applying Chinese herbal secret recipe with herbal extracts, and features mild nature to hair, and ...