A hair comb is a personal care tool used to comb hair, clean the scalp, and improve hair health. It is usually made of wood, plastic, or natural materials, and has teeth of different shapes and sizes to smooth hair, reduce tangles, and stimulate the scalp to promote blood circulation. The teeth of a hair comb can be wide-toothed, fine-toothed, or a combination of designs to suit different hair types and needs. A wide-toothed comb is suitable for wet or tangled hair, while a fine-toothed comb is suitable for dry hair or delicate hairstyles. In addition to daily combing, a hair comb can also help remove dandruff, massage the scalp, enhance the hair's natural shine, and keep the hair in a healthy state.