Can Geranium膏 be used externally?
Generally speaking, Lao Guan Cao Ointment can be used externally. The detailed analysis is as follows:

Lao Guan Cao Ointment is an external-use medicine and must not be taken orally. It is primarily made from traditional Chinese herbs such as Lao Guan Cao, and has functions of eliminating dampness and detoxifying, as well as promoting wound healing. It is suitable for external application on affected areas to treat eczema, boils, sores, abscesses, and minor burns or scalds caused by accumulation of damp-toxin. When using, apply an appropriate amount of the ointment onto the affected area. The frequency of application may be determined according to a doctor's advice or the drug's instructions.
However, please note: it must not be taken orally and should be kept away from contact with mucous membranes such as the eyes and mouth. Do not use on broken or infected skin. Individuals allergic to any component of Lao Guan Cao should avoid using this product. During medication, avoid eating cold, greasy foods, seafood, and other prohibited items. Keep this product out of reach of children to prevent accidental ingestion.
Before using Lao Guan Cao Ointment, be sure to read the drug's instructions carefully or consult a doctor to understand detailed information about the formulation type, ingredients, functions, usage, dosage, and precautions. Follow the doctor's instructions or the directions on the label when using the medication; avoid adjusting the dosage or changing the method of application by yourself. If skin irritation, allergic reactions, or other adverse symptoms occur during use, discontinue use immediately and seek medical attention.