Some people have an odd effect when they drink red wine.

All around their lips, a line appears, sort of purple. It looks strange indeed!

So I would like to know,

1. For curiosity, how is it developed? Why only with a small percentage of people?

2. How can it be prevented and/or solved in the best way when it happens?

Thanks!

Topics: aesthetics, wine, biology, drinking, skin, lips, cosmetics, chemistry, red wine