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Updated January 2022
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BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own. Read more  
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We buy all products with our own funds, and we never accept free products from manufacturers.Read more 
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We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.

30
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95
Consumers
Consulted
26
Hours
Researched
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A serum is a thin liquid with anti-aging, pore-cleansing ingredients that moisturize skin. Serums for oily skin are applied just before makeup in the morning or a moisturizer at night. Their high concentration of active ingredients can make them more effective than cleansers or lotions. Choosing the right serum is important to ensure your skin remains moisturized without drying out. Serums often contain both synthetic and natural substances like aloe, herbal extracts, and vitamins. A serum for oily skin can have the consistency of a lotion or gel but should never leave your face feeling greasy. Some treat conditions like acne or rosacea while smoothing out wrinkles. If the serum is used underneath makeup or moisturizer, it needs to absorb well and not impede makeup application.

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