The last time I used Coppertone sunscreen, I couldn't get tan. In which order should I use tanning lotion and sunscreen?

Based on the information given, it's important to put sun protection ahead of tanning. Tanning is a reaction to UV rays, which are bad for you, and it's a sign of sun damage. When you go outside in the sun, you should always use sunscreen with SPF 30 or higher instead of suntan lotions, which often don't have enough SPF and can make you more likely to get sunburned or have long-term skin damage.

Putting sunscreen on top of tanning lotion wouldn't help you get a better tan, and it could make you spend more time in the sun and cause sunburn. Putting products on top of each other can also change how well they work. For example, putting sunscreen on top of a tanning lotion might make it harder for the sunscreen to stick to the skin properly and protect it the best.

So, to get the most out of sun protection, use sunscreen with an SPF of 30 or higher before any tanning lotion, if you want. This method makes sure that you are protected enough from UV rays while also lowering your risk of getting sunburned and doing long-term damage to your skin.