Compare Products: The Niacinamide 15 Serum vs Glass Skin Refining 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
- Sensitive or eczema-prone skin seeking gentle actives
- Those wanting the 'glass skin' luminous hydration look
- Users who prioritize fragrance-free, clean formulas
- People new to niacinamide who want a lower concentration
- K-beauty enthusiasts looking for a multi-benefit serum
Key Ingredients
Niacinamide (15%), Acetyl Glucosamine (2%), Zinc PCA (1%), Allantoin (0.1%)
Niacinamide, Hyaluronic Acid (multiple types), Madecassoside, Peach Extract, Peptides
Product Composition
28% similarity (8 ingredients in common)
Only in COSRX (8)▾
Only in Peach & Lily (13)▾
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 consistently report improved hydration and a plumper, more luminous appearance. Many describe the 'glass skin' effect as real.
Eczema-prone and reactive skin users frequently report no irritation. Popular first serum for those new to actives.
Lightweight gel texture absorbs quickly. Some note a slight initial tack that disappears once fully absorbed. Layers well.
Multiple users report gradual fading of acne scars and improved evenness over weeks of use.
High repurchase rate in reviews. Users describe it as a staple they consistently return to.