Compare Products: The Niacinamide 15 Serum vs Lipid Gold
Ingredient Analysis
COSRX The Niacinamide 15 Serum is a lightweight serum targeting oiliness, uneven tone, and early signs of aging. Stratia Lipid Gold is a richer moisturizer rebuilding the skin barrier with ceramides, oils, and humectants. Neither is strictly better; the right choice depends on your skin type and goals.
Stratia Lipid Gold contains three ceramides, cholesterol, and phytosphingosine, a complete lipid system that actively rebuilds the skin barrier. COSRX The Niacinamide 15 Serum lacks dedicated barrier lipids.
COSRX The Niacinamide 15 Serum includes Zinc PCA for sebum regulation. Stratia Lipid Gold uses heavier oils and silicone, which may feel occlusive on oily skin.
COSRX The Niacinamide 15 Serum pairs niacinamide with acetyl glucosamine, a combination with evidence for fading uneven pigmentation. Stratia Lipid Gold has niacinamide but no dedicated brightening co-active.
COSRX The Niacinamide 15 Serum uses modern, well-tolerated preservatives. Stratia Lipid Gold contains a formaldehyde-releasing preservative and parabens, which some users react to.
Multiple plant oils, squalane, glycerin, and sodium hyaluronate give Stratia Lipid Gold a rich, replenishing profile designed for dry or compromised skin.
- •No concentrations are disclosed for any ingredient in either product. Niacinamide position differs between the two lists, suggesting COSRX The Niacinamide 15 Serum may contain more niacinamide than Stratia Lipid Gold, but this is inferred, not confirmed.
- •Acetyl glucosamine brightening evidence is promising but limited compared to well-studied actives like vitamin C or alpha-arbutin.
- •Sea buckthorn oils have a strong natural color and scent; undisclosed processing may affect actual skin benefit.
- •Diazolidinyl urea in Stratia Lipid Gold releases small amounts of formaldehyde as a preservative. Risk is low at typical concentrations but relevant for sensitive or allergy-prone users.
- •Ceramide efficacy depends on the ratio of ceramides to cholesterol to fatty acids, which is not disclosed here.
- •Stratia Lipid Gold contains Ethoxydiglycol, which acts as a penetration enhancer. This could increase absorption of both beneficial and potentially irritating ingredients.
Analysis generated from both INCI lists using Claude. Ingredient order indicates relative concentration; exact percentages are usually undisclosed.
Who It's Designed For
- Oily and acne-prone skin seeking serious oil control
- Post-acne marks and hyperpigmentation
- Enlarged pores and textured skin
- Users ready to step up from 10% to higher-strength niacinamide
- Those who prefer minimal-ingredient formulas
- Dehydrated or over-exfoliated skin
- Retinoid users seeking barrier support
- Oily-dehydrated combination skin
- Rosacea or perioral dermatitis (noted in brand communications)
Key Ingredients
Niacinamide (15%), Acetyl Glucosamine (2%), Zinc PCA (1%), Allantoin (0.1%)
Niacinamide (4%), Ceramides (NP, AP, EOP), Cholesterol, Sea Buckthorn Oil, Rosehip Oil
Product Composition
19% similarity (7 ingredients in common)
Only in COSRX (9)▾
Only in Stratia (20)▾
User Feedback Patterns
Users consistently report significant reduction in daytime oil and shine. Many describe it as the best niacinamide serum they have tried for sebum control.
Unlike some high-concentration serums, this absorbs quickly without tackiness or residue. Layers well under other products.
The 20ml size (vs. 30ml standard) is a common gripe, especially given the price point.
Users report visible pore improvement around the 3-4 week mark with consistent twice-daily use.
Some users report initial success followed by breakouts after 2+ weeks of daily use. A subset found success by reducing frequency.
Users who report reactions to Dr. Jart Ceramidin or products with olive-derived squalane sometimes report similar issues with Lipid Gold.
Some individuals react to ingredients well-tolerated by most. Cetyl Alcohol or other ingredients may be factors.
View Full Product Details
Comparing something else?
Paste any two ingredient lists, or photograph the labels, and get the same side-by-side breakdown for products we do not carry.
Open the comparison tool