... 1.SGS/ISO9001 2.high tech hair care product 3.black hair with herbal,just need 5-8mins 4.effective,safe,convenient ... the latest generation hi-tech hair blackening product by applying Chinese herbal secret recipe with herbal extracts, and features mild nature to hair ... better effect.Cautions: 1) Although Ruihu Black Hair Shampoo is herbal product with extremely mild nature and low allergic rate, it is ...