Instant Black Hair Shampoo For Gray HairBlack hair shampoo is designed for 100% gray hair coverage,which can cover all of your gray hair in 10-15 minutes( 15-25 minutes for stubborn gray hair). 3 IN 1 Hair Dye ShampooDifferent from traditional hair dye, our hair dye shampoo is parabens free, Won't damage your skin. Repairs softens damaged hair.It can be used as hair black dye, hair conditioner and hair shampoo.Very convenient to make hair dye black at home and save your precious time from salon visiting. Easy To UseNo bowl or brush, just need to put on the gloves offered in the package, apply the shampoo on the DRY hair,rub it evenly for 5 minutes,and hold it on for 10-15 minutes,then wash it. Herbal Formula IngredientBlack hair dye shampoo contains variety of herbal formulas,the upgraded formula hair color shampoo is more gentle, Wild ginseng can strengthen your hair roots; Sesame with active ingredients make your hair shiny and black. Long Lasting Black ShampooBlack shampoo is available for around 10-15 applications,very economic.What's more,the natural black hair color can last up to 3-4 weeks until gray shows.