Compare Products: Clinical Niacinamide 20% Treatment vs C.E.O. 15% Vitamin C Brightening Serum
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
- Those who want a stable vitamin C that will not oxidize or change color
- Users who find L-ascorbic acid serums too irritating or acidic
- People who enjoy a citrus-scented skincare experience
- Those seeking a vitamin C serum that does not require refrigeration
- Users looking for a luxurious texture that layers well under makeup
Key Ingredients
Niacinamide (20%), Ascorbyl Glucoside (Vitamin C), Meadowsweet Extract
15% Tetrahexyldecyl Ascorbate (THD Ascorbate), Squalane, Glycolic Acid, Tocopherol (Vitamin E), Saccharide Isomerate
Product Composition
11% similarity (5 ingredients in common)
Only in Paula's Choice (20)▾
Only in Sunday Riley (21)▾
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 praise the lightweight oily texture that absorbs well and sits beautifully under makeup. The application experience is rated higher than most L-ascorbic acid serums.
The orange scent is frequently mentioned as a positive. Users who enjoy scented skincare rate this highly. However, fragrance-sensitive users avoid it.
Users appreciate that the golden color remains consistent throughout the product's life. No anxiety about darkening or wasting product due to oxidation.
Brightening results are described as gradual but visible over 4-8 weeks. Some users expecting the immediate 'glow' of L-ascorbic acid find the results slower.
Which Should You Buy?
Paula's Choice Clinical Niacinamide 20% Treatment offers great value at a lower price point. Sunday Riley C.E.O. 15% Vitamin C Brightening Serum may be worth the premium if you want 15% Tetrahexyldecyl Ascorbate (THD Ascorbate).