Even if you you're blissfully acne-free, exfoliation is crucial for all skin types, especially in your 30s. It's an easy (and inexpensive!) way to keep skin from looking flaky and dull right now, and it'll prevent wrinkles in the long run.

Exfoliators are divided into two types: mechanical and chemical. Mechanical exfoliants are grainy and use ingredients like pulverized fruit pits and nutshells or microbeads. Chemical products employ mildly irritating ingredients, like alpha hydroxy acids, to trigger skin cells to shed. Most experts prefer the chemical type because they exfoliate skin evenly and gently, keeping inflammation to a minimum. Whatever exfoliator you choose, reach for it two to three times per week to get smooth, glowy skin.

Eyes may be the window to your soul, but they're also the window to your age, as this is the first place you'll probably see fine lines, not to mention those pesky dark circles. Using a dedicated eye cream is essential. It's specially formulated to be gentle on your delicate, dry, under-eye skin as it strengthens the area. To avoid calling attention to lines and under-eye circles, apply concealer and foundation to problem areas with a very light hand, and finish it with a little setting powder -- this will keep the makeup from settling into lines and making them look deeper than they are.