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Common questions about serums for oily skin and dark spots
Reduction in the appearance of facial hyperpigmentation after use of moisturizers with a combination of topical niacinamide and N-acetyl glucosamine - British Journal of Dermatology Topical nicotinamide compared with clindamycin gel in the treatment of inflammatory acne vulgaris - International Journal of Dermatology
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Common questions about serums for acne-prone, open-pore skin
You can, but it needs to be done carefully. For example, some people layer a simple hydrating serum with a separate treatment serum containing niacinamide or salicylic acid. The risk comes when you combine several strong actives—like multiple exfoliating acids and a retinoid—because that can easily lead to irritation and a damaged skin barrier. A safer approach is to use a hydrating or soothing serum in the morning and keep your main acne or pore treatment serum for the evening, or to alternate treatment serums on different nights. If you are just starting with actives, focus on one treatment serum at a time until you know how your skin reacts. Rejuvenating Face Serum for Glowing Skin with Ceramides & Niacinamide - Mystiqare Skin care for acne-prone skin - American Academy of Dermatology American Academy of Dermatology issues updated guidelines for the management of acne - American Academy of Dermatology Topical nicotinamide compared with clindamycin gel in the treatment of inflammatory acne vulgaris - PubMed Oily skin: an overview - PubMed