In terms of product safety, what key action should clients remember after applying tanning products?

Monitoring the skin for adverse reactions is a crucial action that clients should remember after applying tanning products. Tanning agents can sometimes cause skin irritation or allergic reactions in some individuals, depending on their skin type or sensitivities. By keeping an eye out for any signs of irritation, redness, or unusual changes, clients can address any potential issues promptly. This proactive approach not only ensures their safety but also helps in assessing the compatibility of the tanning product with their skin, leading to better tanning experiences in the future.

The other options do not emphasize immediate post-application safety as effectively. Taking a break before tanning is more relevant to the tanning process itself rather than after application, while avoiding contact with water may be specific to certain products but does not apply universally. Applying two coats for better results focuses on achieving darker color rather than safety, which is paramount for skin care.