Everyone with skin is trying to find the perfect moisture level for it. We admit it's not easy. But how moisturized your skin is can greatly affect the makeup you put on top of it.
If your skin is too moisturized, your foundation can slip into your pores, highlight your lines and wrinkles, and generally give you a blotchy look. You can combat this by using a very light moisturizer and letting it absorb into your skin for a few minutes before applying your foundation.
If you have dry skin, your makeup can look dull and uneven. So, first prep your skin with a creamy moisturizer and give it some time to soak in. Apply liquid foundation (powder foundation will just settle into fine lines and patches) with special moisturizing ingredients.