Compare Products: Clinical Niacinamide 20% Treatment vs Glass Skin Refining Serum
Ingredient Analysis
Paula's Choice Clinical Niacinamide 20% Treatment is a brightening and antioxidant-focused serum with multiple vitamin C and polyphenol sources. Peach & Lily Glass Skin Refining Serum centers on deep hydration and skin barrier repair, with four forms of hyaluronic acid plus Centella asiatica actives. Choose based on whether your priority is evening skin tone or boosting moisture.
Paula's Choice Clinical Niacinamide 20% Treatment stacks niacinamide, ascorbyl glucoside, acetyl glucosamine, and licorice extract. Peach & Lily Glass Skin Refining Serum has niacinamide but lower on the list and no dedicated brighteners.
Peach & Lily Glass Skin Refining Serum uses four distinct hyaluronic acid forms plus saccharide isomerate and beta-glucan. Paula's Choice Clinical Niacinamide 20% Treatment relies mainly on glycerin and panthenol.
Madecassoside, asiaticoside, and beta-glucan are proven calming actives. Paula's Choice Clinical Niacinamide 20% Treatment soothes mainly via allantoin and plant antioxidants.
Paula's Choice Clinical Niacinamide 20% Treatment contains EGCG, green tea leaf extract, meadowsweet, purslane, and ascorbyl glucoside. Peach & Lily Glass Skin Refining Serum has peach extract but far fewer antioxidant sources.
Paula's Choice Clinical Niacinamide 20% Treatment's preservative system is phenoxyethanol plus ethylhexylglycerin, broadly tolerated. Peach & Lily Glass Skin Refining Serum includes 1,2-hexanediol, which can irritate a disrupted barrier.
- •No concentrations are disclosed for either product. Ranking inferences are based on INCI order only.
- •Ascorbyl glucoside in Paula's Choice Clinical Niacinamide 20% Treatment converts to active vitamin C on skin, but conversion rate varies and is formulation-dependent.
- •Acetyl octapeptide-3 in product Peach & Lily Glass Skin Refining Serum has limited independent clinical evidence at typical cosmetic use levels.
- •Niacinamide appears higher in product Paula's Choice Clinical Niacinamide 20% Treatment's list, suggesting a likely higher concentration, but this cannot be confirmed without lab testing.
- •Both products use ethylhexylglycerin; exact percentages affect safety and efficacy of preservation.
- •Plant extract activity depends heavily on extraction method and standardization, neither of which is disclosed.
Analysis generated from both INCI lists using Claude. Ingredient order indicates relative concentration; exact percentages are usually undisclosed.
Who It's Designed For
- Stubborn enlarged or sagging pores that haven't responded to 10% niacinamide
- Orange-peel texture and rough, bumpy skin
- Sebaceous hyperplasia
- Advanced pore concerns related to aging or sun damage
- Post-acne marks and uneven texture
- 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 (20%), Ascorbyl Glucoside (Vitamin C), Meadowsweet Extract
Niacinamide, Hyaluronic Acid (multiple types), Madecassoside, Peach Extract, Peptides
Product Composition
21% similarity (8 ingredients in common)
Only in Paula's Choice (17)▾
Only in Peach & Lily (14)▾
User Feedback Patterns
Users who found the 10% booster insufficient often report better results with this formula, particularly for aging-related pore concerns and textural issues.
The gel texture feels slightly oily to some users before it dries down. Some report a tacky feel or that it takes time to absorb. Most find it works well under moisturizer.
Some users report sensitivity, flushing, or irritation — especially if used daily from the start. Several reviewers recommend using every other day initially or finding 10% sufficient.
Like the 10% booster, results are typically seen over weeks of consistent use rather than immediately. Some users report noticeable improvement within 1-2 weeks; others need longer.
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.
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