What best describes the condition of nails affected by frequent chemical exposure?

Nails that are frequently exposed to chemicals often undergo structural changes due to the harsh effects of those substances. This repeated exposure can lead to a variety of issues, including brittleness and thinning. Chemicals present in nail products, cleaning agents, and other household items can strip the nails of their natural oils and moisture, resulting in weakened nails that are more susceptible to breaking, splitting, and peeling.

Therefore, the condition described as weakened and prone to damage accurately represents the likely state of nails under the influence of frequent chemical exposure. Maintaining a protective routine and using conditioning treatments can help mitigate some of this damage, but it's important to recognize that consistent chemical exposure typically does compromise nail integrity.