Ear wax removal drops usually peroxide based including name brands like Otex and Sodium bicarbonate drops are great for breaking down hard abrasive wax in the ear ready for ear wax removal.
In some instances they can break down wax sufficiently to the extent were by earwax removal may not be required as the wax has sufficiently dissolved, however we find that this in most cases depends on the size of the cavity.
We usually deal with a lot of cases were by the wax has turned in to a semi liquid which slides down the ear canal and settles on the drum completely sealing the canal. and causing complete deafness,
our advise is to use drops for 2-3 days before coming in for an earwax removal