Grape-stained lips can be the sign of a great evening, but most people would prefer not to display their drink of choice on their mouths for the next 24 hours. You can help prevent stains by alternating drinks of water between glasses of vino, and by wearing lip balm.
Bring a product made especially for removing wine stains from lips and teeth whenever you're going to be out drinking. Wine Naps and Wine Wipes are individually-packaged, pre-moistened towelettes that can take the unsightly purple mess from your mouth.
Apply clear lip balm if you have some. Try putting some on your stained lips and then gently rubbing it off. This may take the stain off, but be careful you don't rub too hard. Removing the skin on your lips will make them even more prone to wine stains, which will take much longer to wear off.
Apply facial or hand soap with a washcloth, if the stain is still visible. Alternately, you can gently rub a small amount of baking soda and water on your lips. Again, be careful not to rub too hard.
Dry lips will be more likely to stain. Keep yourself well hydrated before drinking wine.