So a conundrum arises: "If I use a cleanser, toner or even moisturizer for oily skin, which is extremely effecting at balancing oily skin, wouldn't it aggravate the dry part of my combination skin?" The solution lies in giving combination skin a little extra attention and your skincare regimen a few extra steps.
Instead of just using a balancing cleanser, which can be drying when used on already dry skin, you should also include a gentle, non-stripping cleanser to your routine. Use the balancing cleanser in your t-zone to combat the extra oil. And to avoid over drying your cheeks, use the gentle cleanser to clean them. Sectioning off your face based on concern will help target the treatment.
Oily and acne-prone skin doesn't require the added moisture from a moisturizer (yet some people with this type of skin do enjoy an oil-free moisturizer). Yet, moisturizers are one of the most important products for someone with dry skin. For combination skin, there isn't one all-over answer. Instead, like with the cleansers, the face has to be treated in sections to solve the different conditions of the skin type. Apply a light, water-based moisturizer to your cheeks only to help restore the balance all over.
If you have combination skin, you need a combination treatment.