Compare Products: Clinical Niacinamide 20% Treatment vs C15 Super Booster
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 seeking a CE Ferulic serum with added peptide benefits
- Users who want collagen stimulation from both vitamin C and peptides
- People who prefer mixing a vitamin C booster into their existing products
- Prestige skincare shoppers who want the formula at Sephora
- Users comfortable with 15% L-ascorbic acid concentration
Key Ingredients
Niacinamide (20%), Ascorbyl Glucoside (Vitamin C), Meadowsweet Extract
15% L-Ascorbic Acid, Ferulic Acid, Tocopherol (Vitamin E), Peptides (Tridecapeptide-1, Palmitoyl Tripeptide-5), Sodium Hyaluronate
Product Composition
17% similarity (7 ingredients in common)
Only in Paula's Choice (18)▾
Only in Paula's Choice (17)▾
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 visible brightening and improved skin tone within 2-4 weeks. The 15% concentration is effective for most users.
At $55 for 20ml, this is one of the priciest vitamin C serums relative to volume. Users note the small bottle size is a drawback for daily full-face use.
Multiple reviewers report receiving bottles that appear already oxidized (yellow or orange). This is a recurring complaint that the brand has acknowledged.
The booster format is praised for flexibility. Users mix it with moisturizer, sunscreen, or other serums without issues.
Which Should You Buy?
Paula's Choice Clinical Niacinamide 20% Treatment offers great value at a lower price point. Paula's Choice C15 Super Booster may be worth the premium if you want 15% L-Ascorbic Acid.