Calamine is used in face masks primarily for its:

Calamine is recognized for its soothing effect, which is why it is commonly used in face masks. This ingredient has a long history of being utilized to calm irritated skin, making it particularly effective for conditions such as sunburn, rashes, or other forms of skin irritation. Its anti-inflammatory properties help to alleviate discomfort and redness, promoting a more even skin tone and providing relief to sensitive skin.

The other options, while they pertain to common skin benefits, do not accurately reflect the primary use of calamine. Calamine does not significantly moisturize the skin, nor does it have exfoliating properties. Additionally, it is not known for any anti-aging benefits, as its main function lies in providing soothing relief rather than addressing the signs of aging. This makes the soothing effect the defining characteristic that supports its inclusion in facial masks.