Try: Paula's Choice 10% Azelaic Acid Booster, $36

This nifty booster helps stop breakouts in their tracks without causing any dryness or irritation (as many acne treatments are wont to do). It's designed to either be layered or mixed with your other products, officially making it the perfect "boost" to your skin care routine.

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Try: Vichy Mineral 89, $29.50

Sometimes the only boost your skin needs is a little extra moisture — which is where this nifty product comes in. With the help of some skin-nourishing minerals and a hefty dose of hyaluronic acid, it adds just the right amount of lightweight hydration to parched skin.

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Try: Eco Your Skin Booster-Serum Vitamin A, $35

Vitamin A — aka retinol — is one of the best skin care ingredients around when it comes to reducing the appearance of fine lines. Suffice it to say, a booster like this is an essential (and get a load of that awesome packaging).

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Try: Vichy LiftActiv Vitamin C Serum, $28.50

A vitamin C-packed booster like this one is perfect for helping to fade hyperpigmentation and dark spots. All you have to do is add a few drops to your morning skin care routine — and watch your skin brighten by the day.

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Try: Caudalie Vinopure Skin Perfecting Serum, $49

Salicylic acid is a popular ingredient for fighting breakouts and it also happens to be great for refining your pores. This serum works wonders on an oily and/or breakout-prone complexion — and you'll love the scent too.

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