Where is the T-zone? The T-zone is typically the spot most people have trouble with oily areas. It can be part or all of the forehead, descend through your nose (and right beside your nose), and include your mouth and chin. Extra oiliness is normal in these areas and should not be confused with having an overall oily complexion. Dry vs. Dehydrated |: What’s the Difference? Many people think their skin is dry when it is in fact dehydrated. Does your skin make fine wrinkles if you hold your finger against it? Does it feel tight or dry to the touch but you can still see your pores? It’s probably dehydrated. Try a hydrating mask and drink more water!