I had itchy ears for years and years and years from dry ear wax.
It was mega itchy and used to go weepy.
Told by the GP to use olive oil - made it worse. Got prescribed a steroid ear drop - made no difference.
No scratching allowed.
Used bicarbonate ear drops for five days, morning and night. It cured it and I have never looked back
I still use it if there is any sign of a return, and I have an olive oil ear spray (earol) if it feels dry, which is less messy than the drops.