Natural plant extract for hair care and preparation method and application thereof

The invention discloses a natural plant extract for hair care and a preparation method and application thereof. The natural plant extract is prepared from the following raw materials in parts by mass: 40-65 parts of polygonum multiflorum, 30-50 parts of Chinese angelica, 20-35 parts of cacumen biotae, 10-25 parts of sapindus, 20-50 parts of tea seed and 25-40 parts of melaleuca bracteata. In the invention, the effective components in the raw materials are extracted by the supercritical fluid technology; the obtained extract has high content of effective components, contains a great quantity of natural surface active components and natural nutrition conditioning components, does not irritate the scalp, and can thoroughly clean the hair to realize the effects of nourishing, oil control, dandruff removal and itching relief; and after washing hair, the hair becomes naturally glossy, soft, smooth and easy to comb. The natural plant extract disclosed by the invention is simple to prepare, has stable quality and high safety, and can be widely used for preparing the hair washing and hair care articles.