How can I win?

Do you remember what happened at the very beginning of the game?

You had to drop several items off the carpet, including some tanning lotion.

The lotion's location will change, depending on where you were when you
pushed the case over the edge, so you'll have to find it yourself.

Find the lotion, and then read the directions.

When in doubt, ignore the warning labels.

You do want a quick tan, even if it only lasts a few hours, don't you?

Then find some lemon juice.

It's located just below Azure in her mansion.  See the "Other Puzzles"
section for some more help.

Then all you need to do is open the case and drop it in the vat.