Yes, you should always use an indoor tanning lotion. They provide the three essentials of effective tanning: hydration, nutrition, and oxygenation. Without a lotion, it can take up to 12 minutes for melanin production to begin, but with lotion, that production starts within the first minute. Moisturized skin tans better, more quickly, and evenly, and maintains the desired tan. Vitamins replenish the necessary nutrition to skin cells, promoting cell regeneration and oxygenation. Oxygen fuels skin cell functions, thereby accelerating the tanning process. There are several different types of indoor lotions. If you’re looking to jumpstart your tan, try using a tan accelerator. A bronzer will give you a boost of color and help you achieve results faster. Never leave your lotion in your car; heat activates the ingredients in your lotion, which can cause it to spoil.