It is best not to apply plasters after safflower oil, because safflower oil works to invigorate blood stasis, reduce swelling and pain, and is mainly used to treat symptoms of swelling and pain such as rheumatism and bone pain, bruises and injuries, and many plasters have the same effect. If you apply safflower oil and then paste the ointment, the efficacy of the two drugs is similar, there is no need. And the two drugs used together are prone to adverse reactions and aggravate allergic reactions, so it is best not to use both drugs at the same time. If the effect of using safflower oil is not obvious, you can wipe the skin clean and then change to another ointment, so you can also know which drug is more effective. If the symptoms are not relieved for a long time, you need to go to the hospital for further examination and choose a more appropriate treatment plan.