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But many of these tools are not effective and can make certain earwax issues worse or cause injuries, particularly when not performed correctly and under the care of a professional, experts cautioned.

"While all of those technologies are nifty and cool to see, they're not the safest," said Ana H. Kim, a neurotologist and professor of otolaryngology at Columbia University.

Earwax, or cerumen - that yellow or light brown substance - is produced by glands in the outer one-third of the ear canal, where it mixes with sweat, dead skin cells and loose hair, among other substances. And the wax has a purpose. It is intended to moisturize the skin inside the ear canal, trap dirt and debris, and help protect against bacteria and fungi, research shows.