When you have dark red nail polish on, it usually takes you 3-4 cotton balls and a lot of nail polish remover to remove your nail polish. With this tip, you will be able to waste less cotton balls and less nail polish remover.
When removing your old nail polish, use a Saran wrap to wrap around the cotton ball that is soaked with nail polish remover. By doing that, you will be able to slow down the nail polish remover evaporation time.
In other words, you can keep more nail polish remover on one cotton ball. So instead of wasting 3-4 cotton balls to remove one red nail polish, you are now only using only 1 cotton ball with a little bit of nail polish remover on it!
Try it, it really works!