Compare Products: The Niacinamide 15 Serum vs Hyaluronic Acid Serum
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
- Those who want pure, no-frills hydration
- Users with sensitive or reactive skin who need minimal ingredient lists
- Budget-conscious shoppers seeking effective hyaluronic acid
- People building a multi-step routine who want a clean layering product
- Those with fungal acne (minimal ingredient list avoids common triggers)
Key Ingredients
Niacinamide (15%), Acetyl Glucosamine (2%), Zinc PCA (1%), Allantoin (0.1%)
Sodium Hyaluronate (multiple molecular weights), Panthenol
Product Composition
15% similarity (3 ingredients in common)
Only in COSRX (13)▾
Only in Good Molecules (4)▾
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.
Users with reactive, eczema-prone, or post-procedure skin report zero irritation. The minimal ingredient list is the primary reason.
Reviewers consistently describe this as a reliable hydration layer. Works well under other products and does not interfere with subsequent steps.
Users who expect more than hydration are sometimes disappointed. This does one thing and does it well.
The $6 price point is frequently cited as a major positive. Users feel the performance matches or exceeds more expensive alternatives.
Which Should You Buy?
Good Molecules Hyaluronic Acid Serum offers great value at a lower price point. COSRX The Niacinamide 15 Serum may be worth the premium if you want Niacinamide (15%).