Useful, most of silk.field’s black hair care products contain plant black hair essences, such as polygonum multiflorum, Eclipta japonica, black mulberry, black sesame, black dates, soybeans, black rice, and black willow. It then nourishes the scalp and hair, improves the nutrient supply and scalp environment, fills the gaps in the hair scales, strengthens the hair, delays and reduces gray hair, and maintains the hair in a plump and healthy state. Originally, my hair was a bit yellow and white, but after going to Silkland for hair care, my hair became jet black and shiny.