Ooer,indeed. Is this a �woman� thing then? I imagine the closest approximation would be something analogous to �sebum�. Sebum is usually found in the hair though � although Fordyce spots often found on the upper lips are sebaceous glands (sebum producing) without hair follicles. Unless of course you all have taches!
I think �gwang� is slightly less mucky-sounding than any of my suggestions aint it.