The Niacinamide 15 Serum
- Routine step
- Serum (serum)
- When
- Morning and evening
- Skin types
- Oily, Combination, Normal
- Pairs well with
- Azelaic Acid, Salicylic Acid, Heartleaf, Retinol
Apply a pea-sized amount to clean, slightly damp skin before your moisturizer. Start with a few nights a week if it contains an active you are new to.
Ingredient research in this formula
These are ingredient-level research links, not evidence that this exact product has been clinically tested.
A multitasker that calms redness, evens out skin tone, and helps oily skin balance out. One of the safest do-a-little-of-everything ingredients.
Good for: Brightening, Barrier repair, Anti-inflammatory
Replenishes one of the actual humectant molecules your own skin makes. Levels drop in eczema and with age, so topping it up genuinely helps dry, dehydrated, or atopic-prone skin feel less tight.
Good for: Hydrating, Barrier repair
Evidence behind the ingredients
Real citations from our research database, one per tracked active in this product. Click any ingredient name to read its full evidence dossier.
A multitasker that calms redness, evens out skin tone, and helps oily skin balance out. One of the safest do-a-little-of-everything ingredients.
Moro F et al., Skin Cancer Prevention and Antiaging: Role of Nicotinamide, International Journal of Molecular Sciences 2026
Passeron T et al., An Investigator-Blinded, Randomized Trial of a Broad-Spectrum Sunscreen Containing Sclareolide and Niacinamide, Dermatology and Therapy (Heidelberg) 2026
Vergilio MM et al., Topical Formulation with Niacinamide Combined with 5 MHz Ultrasound for Improving Skin Ageing, Current Medicinal Chemistry 2025
Replenishes one of the actual humectant molecules your own skin makes. Levels drop in eczema and with age, so topping it up genuinely helps dry, dehydrated, or atopic-prone skin feel less tight.
Novel design of pyrrolidonecarboxylic acid and sodium dilauramidoglutamide lysine complex for targeted drug delivery to human stratum corneum, International Journal of Pharmaceutics 2025
Baldwin H, Del Rosso J, Going Beyond Ceramides in Moisturizers: The Role of Natural Moisturizing Factors, Journal of Drugs in Dermatology 2024: review establishing PCA (pyrrolidone carboxylic acid) as a core skin natural moisturizing factor alongside amino acids, urea, lactate, and electrolytes; essential to barrier function and xerosis treatment
Li L et al., Association Between Skin Acid Mantle, Natural Moisturizing Factors, and Antibacterial Activity Against S. aureus in the Stratum Corneum, Clinical Cosmetic and Investigational Dermatology 2023: PCA and urocanic acid as NMF components contribute to skin antibacterial defense; 1-unit pH drop = 68.1% S. aureus cell death
Sources: 10 clinical journals and regulatory databases across the US, EU, Korea, Japan, and China. Every entry points to a specific document. See methodology for the full list and what each outcome label means.
Full ingredient list
Everything on the package label, not just the tracked actives above.
+−Show all 15 ingredients
Listed in the order printed on the package. By regulation, ingredients at 1% or higher are listed in descending order by concentration, so the first entry is the largest part of the formula.
- Water
- Pentylene Glycol
- Niacinamide (15%)
- Butylene Glycol
- Acetyl Glucosamine
- 1,2-Hexanediol
- Zinc Pca
- Trehalose
- Xanthan Gum
- Pullulan
- Allantoin
- Ethylhexylglycerin
- Sodium Phytate
- Citric Acid
- Tocopherol
Similar comparisons
Not medical advice. GlowPal is educational. Patch-test new products and talk to a qualified healthcare professional before changing your routine, especially if you're pregnant, nursing, or have a diagnosed skin condition. See our terms.