During the dry winter months it’s important to step up your skincare routine with these three facial serums you need to attain flawless skin–at any age. Lots of people skip serums because they think they’re expensive (some are but not all, and a bottle can last a long time); they don’t know much about them; or they think if they use a good moisturizer with SPF then they’re good to go. Maybe right now, but the goal is to protect your skin so as you get older you won’t develop lines, wrinkles, age spots, and the other tell tale signs of aging. That’s why it’s best to start now–the sooner the better.

Here’s some more advice. Start with one type of serum and do a patch test to see how your skin reacts. Serums can be potent, so it’s best to not go overboard applying all of them at once, and they all have different benefits. To get the most out of them, it’s best to apply one in the morning and one at night. Wash your face and while your skin is still damp (which makes it easier to absorb) apply about a dime size amount onto your finger, blend onto your face and neck, and let dry. Follow up with your favorite moisturizer.

Below are the 3 basic serums you can start off with, and we’ve chosen 10 of our favorite products for each type.