Paula's Choice 10% Azelaic Acid Booster for Redness Relief vs Sunday Riley B3 Nice 10% Niacinamide Serum
Paula's Choice 10% Azelaic Acid Booster for Redness Relief scores 8.4/9.8 and Sunday Riley B3 Nice 10% Niacinamide Serum scores 8.5/9.8 — a near-tie where your skin type decides the winner.
Head to head
10% Azelaic Acid Booster for Redness Relief
B3 Nice 10% Niacinamide Serum
Score comparison
These two are neck and neck — just 0.1 points apart.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
Paula's Choice WINSIrritation Risk
TIEActive Ingredient Strength
Sunday Riley WINSIngredient Transparency
TIEFormulation Safety
TIEIngredient face-off
7% overlapOnly in Paula's Choice 10% Azelaic Acid Booster for Redness Relief
17 unique
Only in Sunday Riley B3 Nice 10% Niacinamide Serum
40 unique
Why these two are neck and neck
These two serums take different paths to a similar destination. Both formulas include solid hydrating ingredients, and the overall scores reflect that — the gap here is genuinely slim.
Active Ingredient Strength is another area of separation. Sunday Riley B3 Nice 10% Niacinamide Serum scores 7.6 here versus 5.9 for Paula's Choice 10% Azelaic Acid Booster for Redness Relief. That difference comes down to how each formula is built — the ingredient list tells the story.
Sunday Riley B3 Nice 10% Niacinamide Serum brings Niacinamide, Resveratrol, and Asiaticoside as actives, while paula's Choice 10% Azelaic Acid Booster for Redness Relief relies on Azelaic Acid, Salicylic Acid, and Adenosine. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Best for your skin type
Paula's Choice 10% Azelaic Acid Booster for Redness Relief is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Dry or dehydrated skin that craves moisture, thanks to Glycerin
- Anyone who prefers clean, well-vetted formulations
Sunday Riley B3 Nice 10% Niacinamide Serum is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Targeting specific concerns like aging or uneven tone — Niacinamide does the heavy lifting
- Anyone who prefers clean, well-vetted formulations
Value comparison
At mid-range pricing with a score of 8.4, Paula's Choice 10% Azelaic Acid Booster for Redness Relief is a decent pick. Sunday Riley B3 Nice 10% Niacinamide Serum sits at the premium level with a 8.5 score — the higher investment pays off in formulation quality.
Our verdict
It's a close call — both products score within 0.3 points of each other. Your choice depends on your specific skin concerns.
Frequently asked questions
Which is better: Paula's Choice 10% Azelaic Acid Booster for Redness Relief or Sunday Riley B3 Nice 10% Niacinamide Serum?
Based on ingredient analysis, Sunday Riley B3 Nice 10% Niacinamide Serum scores higher overall. See the full score breakdown above for details on each attribute.
Do Paula's Choice 10% Azelaic Acid Booster for Redness Relief and Sunday Riley B3 Nice 10% Niacinamide Serum share ingredients?
Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.
What's the main difference between Paula's Choice 10% Azelaic Acid Booster for Redness Relief and Sunday Riley B3 Nice 10% Niacinamide Serum?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.