Your lips could use an extra layer of Vaseline now that they are so dry from the cold. But beware:it is better not to smear it when you go outside.
Biophysicist Boris Kingma warns about this on the RTL Nieuws website. You insulate your skin with fats, such as Vaseline. This also ensures that more moisture remains in your skin. The cold can cause it to freeze, which increases the risk of cold injuries (frostbite).
Read all the tips from RTL Nieuws to protect yourself against the cold.