Managers Tip of the Month Why should I use a tanning lotion? Indoor tanning lotion is specifically designed to maximize your results. It does this in several ways. First, it replenishes the moisture your skin normally loses while tanning. This not only protects your skin, but also prevents dry skin which tends to minimize the effects of tanning. It also slows the aging process and keeps skin healthy. So, lots of water and quality indoor tanning lotion will make for a healthier tan.