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Paula's Choice 10% Azelaic Acid Booster for Redness Relief scores 8.4/9.8 and Paula's Choice Skin Perfecting 4% BHA Advanced Exfoliating Serum Toner scores 8.5/9.8 — a near-tie where your skin type decides the winner.
These two are neck and neck — just 0.1 points apart.
Scores last verified: June 2026
13 unique
7 in common
13 unique
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.
Hydration Efficacy is another area of separation. Paula's Choice 10% Azelaic Acid Booster for Redness Relief scores 7.4 here versus 6.6 for Paula's Choice Skin Perfecting 4% BHA Advanced Exfoliating Serum Toner. That difference comes down to how each formula is built — the ingredient list tells the story.
Paula's Choice Skin Perfecting 4% BHA Advanced Exfoliating Serum Toner brings Salicylic Acid, Adenosine, and Allantoin 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.
Paula's Choice 10% Azelaic Acid Booster for Redness Relief is better if you have
Paula's Choice Skin Perfecting 4% BHA Advanced Exfoliating Serum Toner is better if you have
Both sit in the mid-range bracket, so value comes down to formulation quality. Paula's Choice Skin Perfecting 4% BHA Advanced Exfoliating Serum Toner gets the nod here with its 8.5 overall score — you're getting more for a similar outlay.
It's a close call — both products score within 0.3 points of each other. Your choice depends on your specific skin concerns.
Based on ingredient analysis, Paula's Choice Skin Perfecting 4% BHA Advanced Exfoliating Serum Toner scores higher overall. See the full score breakdown above for details on each attribute.
Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.
Honest skincare intel. No jargon, no gatekeeping — just the ingredients decoded.
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© 2026 Gracie. All rights reserved. Data sourced from Open Beauty Facts (ODbL) and EU CosIng.