DARK BROWN HAIR DYE SHAMPOO: Our hair dye shampoo contains active , the unique conditioning compound helps protect the hair fibers from the inside out. Only 15-20 minutes are needed, grey hair will turn into their natural dark brown. This Semi-permanent hair color shampoo dyes hair in dark brown color quickly and absorbs effectively to nourish, protect hair from falling and scalp itching.(Warm Note: Take a skin test before first use.) | 3 IN 1 BROWN HAIR DYE: Different from traditional hair dye, our hair dye shampoo is no ammonia, parabens & harsh chemicals. The product can be used not only as a brown hair dye but also as a hair shampoo and hair conditioner. | EASY TO UES: All you need to do is apply the color shampoo while your hair is dry like a normal shampoo, leave it on for 15-20 minutes and rinse it out completely. Then you can have a natural Dark Brown hair?Effortless. | EFFECTIVE: This shampoo can be maintained for 4-5 weeks with one use. If you want to keep the shiny dark brown color for a long time, we recommend you to use this product once in 15 days. | NO FRIZZ: We added Argan Oil, Olive Oil and Turmeric to the semi permanent hair color. These are effective in helping hair to be smoother and smooth out frizz after using color shampoo.Don't worry about drying out your hair.