Removing of streak line on fogging mirror

I have just purchased and installed a mirror for my bathroom. Recently, i notice that there will be streak lines on the mirror whenever there is fogging. What i understand from my installer is that the lines is caused by a layer of wax which is applied on the mirror to prevent scratches on the mirror. If so, is there any way that i can remove the lines so it doesn't appear again when fogging? Tried removing it with glass cleaner.

I have read and I agree to's Terms of Use, including Privacy Policy and Cookie Use.