After sticking the plaster for 8- 12 hours, it is best to tear it off. Because during this time, the skin has absorbed the effective components of the plaster, if it is torn off after a period of delay, it will increase the burden on the skin, hinder the permeability of pores, hinder the discharge of sweat, and even cause local dermatitis.

Special reminder: the skin also needs to breathe. If the plaster is stuck for too long, it is prone to skin allergies such as flushing, itching, papules or blisters. Skin allergy generally does not need special treatment, and can be recovered after stopping using it for 3-5 days. Those with severe symptoms should go to the hospital for treatment.

The swelling data plaster is mainly used to treat sores, swelling and pain. Because the plaster is used for sticking plaster on thin muscle surface, the medicine with strong smell is taken out from the plaster, and the medicine is introduced to the affected area. Therefore, it can penetrate into the skin and produce the effects of diminishing inflammation, relieving pain, promoting blood circulation to remove blood stasis, invigorating qi and nourishing blood, dredging channels and collaterals, strengthening tendons and bones, relaxing tendons and activating collaterals, dredging orifices and penetrating bones, expelling wind and dispelling cold, etc.

The plaster attached to the body surface stimulates nerve endings, dilates blood vessels through reflection, promotes local blood circulation, improves the nutrition of surrounding tissues, and achieves the purposes of detumescence, anti-inflammation and analgesia.

Refer to Baidu encyclopedia plaster