Final answer:
Cerumenolytics are used to soften, not harden, earwax, making the statement false. They help in removing impacted earwax from the ear canal.
Step-by-step explanation:
Cerumenolytics are substances used to break down and soften earwax, also known as cerumen. Therefore, the statement 'Cerumenolytics are used to harden watery wax in the ear' is false. These agents actually work by softening, fragmenting, or dissolving hardened earwax, making it easier to remove from the ear canal. They are often used when cerumen accumulates and becomes impacted, potentially leading to hearing loss, discomfort, or infection. Cerumenolytic agents include substances like hydrogen peroxide, mineral oil, glycerin, and saline solution, which help to soften and loosen the earwax.