Powder foundation is best for oily skin because the powder can usually combat and absorb oiliness from the skin. On the other hand, dry skin does well with a liquid foundation. Liquid formulas can successfully cover dry skin without aggravating the dryness, which could lead to cracks. Also, most liquid formulas have added moisturizing properties, which are great for dry skin.

If you've got combination skin, you're smack between dry and oily skin. The good news is that you can use both liquid and powder formulas. However, tread carefully at this point because using too oily or dry formulas is one of the foundation mistakes that are making you look old. Sadly, finding the perfect one can be difficult, especially if your oily and dry patches are on the extreme ends of the scale.

This brings us to another option; using both formulas. Let's start by saying that using one foundation over another will definitely give you a cakey look. So instead, use a liquid formula in dry areas and a powder foundation in oily areas. Be warned, though: this will test your sanity and blending skills. This option may not be ideal if you're new to the makeup world. Instead, cop this hack from Ellis James Designs: start with liquid foundation and concealer, then dust lightly with powder foundation to set your look.