What is Earol Olive Oil Spray? Earol Olive Oil Spray provides a simple yet effective method of delivering a dose of olive oil into the ear canal. The NHS now recommends that olive oil is instilled into the ear canal to soften ear wax before syringing, making Earol the ideal product for you if you need to remove excess ear wax.   How to use Earol Olive Oil Spray Administer 1 or 2 applications of Earol to the ear twice daily for 4 or 5 days before consultation for wax removal. Apply 1 application Earol to the ear once weekly.