There could be so many reasons behind your puffy,swollen face from stress,water retention, allergies etc.
But don't get stressed about it,as it is not permanent.here are few natural ways to get rid of puffy face.
1. Reduce your salt intake
salt tend to retain water in the body causing puffiness.so don't eat too much salted items like chips,wafers,carbonated drinks etc.
2.Eat whole grains,fruits containing Vitamin c,beta carotene and anti oxidants. All these prevent water retention and also helps your skin to glow.
3.Drink sufficient water.Dehydration causes water retention and thus swollen face.
4.Do regular exercise to improve circulation which will help open up the pores.