What is a tanning lotion?

A tanning lotion is specifically designed to enhance the tanning process. These products contain ingredients that promote melanin production, helping the skin to tan more effectively when exposed to UV rays. Additionally, tanning lotions often include moisturizing agents that benefit the skin, keeping it hydrated and healthy during the tanning process. They may also contain protective ingredients that help to minimize damage from UV exposure while optimizing tanning results.

Unlike other options, which focus on different skin care functions, tanning lotions play a central role in the tanning experience by directly promoting and improving the effectiveness of tan development. This makes option B the best description of what a tanning lotion is and its intended purpose.