Hydrogen peroxide is a common ingredient in eardrops that can help remove earwax by adding oxygen to the wax, causing it to bubble and soften. Earwax is a waxy substance secreted in the ear canal.

“When our ear wax is dark brown, it often means the wax has been in the ear for a while and will likely be quite hard, " says the audiologist. "Wax of this colour could indicate there is a build ...