Today I met a lady who asked me if I sold creams for old skin and young skin. I explained to her that although the simple answer might be “yes,” how I classify skin is first and foremost by the oil content, not age. Without knowing how much oil your sebaceous (oil) glands are producing (or not producing), you could wind up with a skin care disaster.
If you have oily skin and are 50 or 60 years old (yes, this is possible!) and you are using creams for “anti-aging” and/or mature skin, you might create an oil slick, or at the very least blackheads and possibly whiteheads. And you conceivably could be 25 and have true-dry skin in which case you would want a product that puts oil on your skin, even at that young age.
To help you understand your own personal skin type, see: