oil traps in moisture so it's good for keeping your skin moisturized. kanang salt... well salt mixed with oil can be use to exfoliate your body and slough of dead skin cells and expose a fresher brighter skin. if not salt use sugar. the point is to have something "gritty" in it. but i would not recommend this for the face, its probably too harsh.
for the face, try "aspirin mask". pag dugmok lang mog 2-3 ka aspirin mixed with a little bit of water. just enough water (about 1 teaspoon) to make some sort of "paste" unya ibutang sa inyong face. wash your face first before apply the aspirin mask. let it sit for about 5 mins or until dry na sya. then pat a bit of water on your face and massage it using a circular (gentle) motion. don't stay too long in one spot or you can risk irritating/scratching your skin. some of my friends swears it really brightens their face. try it if it works for you