Why does liquid perfume disappear from skin after applying?

Perfumes will stay on your skin as long as it isn't disturbed. It might lose it's smell after a while, but the perfume will still be there. Perfume also soaks into your skin and mixes with your body's natural oils; over time, this could mask the smell as well. Don't forget about your clothes, they can lightly rub against your skin and eventually remove the perfume in those areas. Also, scratching and rubbing will take it off. The only way that a perfume wil disappear 100% is when you bathe.

Most perfumes contain alcohol which cause the liquid to evaporate.