Hair Darkening Polygonum Serum: Provide nutrition for hair, deeply nourishes the hair and scalp, that help keep your natural hair color,from gray hair to vivid dark color to restore your self-confidence and make you look and feel younger. Repair Nourishing: Hair Darkening Serum helps repair damaged hair's surface,lock in moisture & control frizz, ensures that the hair remains hydrated,shiny,enhances hair color and maintains its brightness. Natural Polygonum Serum: Organic hair darkening Serum for grey hair contains natural ingredients, include polygonum etc., mild and don't hurt the scalp,it's suitable for all hair types. Deep Cleaning: Gray hair coverage soap can produce rich and delicate foam,deep cleansing and oil control,balance oily scalp,keep the scalp moisturized & refresh,reduce dandruff to a certain extent. How to Use: After shampooing your hair, apply He Shou Wu Extract directly to the scalp and gently massage your scalp for 2-3 minutes.