Buckthorn is not recommended for long-term use. Buckthorn products are the dried heartwood of the trunk and roots of the leguminous plant Buckthorn Sandalwood. It is pungent in flavor and warm in nature. It belongs to the liver and spleen meridians. It has the effects of resolving blood stasis and stopping bleeding, regulating qi and relieving pain (relieving pain by unblocking qi). It is used in treating hematemesis, epistaxis, traumatic hemorrhage, liver depression and coercive pain, chest paralysis, bruises, vomiting and abdominal pain. Descending Fragrance is a pungent and warm product, long-term use may damage the fluid, and is prohibited in cases of yin deficiency (deficiency of yin essence in the body, resulting in hyperactivity of deficiency fire), and blood-heat paranoia. If there is a need for medication, it should be used under the guidance of a doctor, and should not be used blindly by oneself to avoid adverse consequences.