What preventive measure helps in maintaining skin health during tanning?

Wearing protective eyewear is crucial for maintaining skin health during tanning because it shields the eyes from harmful ultraviolet (UV) rays emitted by tanning beds or the sun. The skin surrounding the eyes is sensitive and can be particularly vulnerable to UV damage, which increases the risk of conditions such as cataracts and other eye-related issues. Protective eyewear is designed to block these rays, ensuring that the eyes remain safe while still allowing for tanning practices.

The other options do not contribute effectively to skin health during tanning. Using lower SPF does not provide adequate protection against sun damage, as it can lead to a false sense of security. Applying moisturizers only after tanning may not prevent skin dryness or damage that occurs during the tanning process, and staying indoors before tanning doesn't offer any benefits to the skin's health when actual tanning occurs outdoors or in a tanning bed. Therefore, wearing protective eyewear is the most effective preventive measure in maintaining skin health during tanning.