Al-jawab billahi at-taufeeq (the answer with Allah's guidance)
One may apply the black seed oil. (Tibbi Nabawi)
Prophet (Sallallahu Alaihi Wasallam) said, "Use the Black Seed, because it contains a cure for every type of ailment, except for death." [At-Tirmidhi, Ahmad, and Ibn Hibban]
Make Du'a to Allah Ta'ala and place trust in Him alone.
"And when My slaves ask you (O Muhammad ) concerning Me, then (answer them), I am indeed near (to them by My Knowledge). I respond to the invocations of the supplicant when he calls on Me (without any mediator or intercessor). So let them obey Me and believe in Me, so that they may be led aright." (2:186)
"Then when you have taken a decision, put your trust in All‚h, certainly, All‚h loves those who put their trust (in Him)." (3:159)