Please diagnose the problem initially, don't use medicines without proper diagnosis. As improper medicines will causes various issues.

If you have hyperacusis then consult with ENT Specialists. Second  it may be of your headphones   which you are using  in daily  routine.avoid  headphones.  So avoid headphones.

Do you have tinitus or ear infection itching kind of issue?? If no, then kshara tailam is not at all a good option for you. I'm afraid...instead of getting benefit you will get harm in return... There are certain reasons behind hyperacusis, also it comes with other symptoms like palpitation increment, weakness etc...so root cause of your issue is needed to be discovered, for that consult here

Take proper counseling to clear all ur doubts

As per Ayurveda hyperacusis is due to vitiated Vata dosha.Internal medications are also important along with some procedures. Kshara thaila can be used only after proper assessment to know if you are fit for it. It should not be used in any active infections. You can consult a Salakya Tantra specialist (ENT Specialist) in Ayurveda for proper management.

Consult ayurveda physician for proper diagnosis and root cause of ailment before consuming any medicine