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Paula's Choice Clinical 1% Retinol Treatment scores 8.9/9.8 vs Horace Sérum Acide salicylique + Niacinamide at 8.0/9.8. Paula's Choice Clinical 1% Retinol Treatment wins for hydration.
Paula's Choice Clinical 1% Retinol Treatment edges ahead, winning 2 of 5 attributes.
Scores last verified: April 2026
18 unique
43 unique
Where Paula's Choice Clinical 1% Retinol Treatment really shines is hydration efficacy, scoring 9.8 compared to Horace Sérum Acide salicylique + Niacinamide's 5.9. With Glycerin, Butylene Glycol, and Sodium Hyaluronate in its top ingredients, Paula's Choice Clinical 1% Retinol Treatment delivers stronger moisture-binding capability.
Active Ingredient Strength is another area of separation. Horace Sérum Acide salicylique + Niacinamide scores 7.4 here versus 7.1 for Paula's Choice Clinical 1% Retinol Treatment. That difference comes down to how each formula is built — the ingredient list tells the story.
Paula's Choice Clinical 1% Retinol Treatment brings Retinol, Palmitoyl Tetrapeptide-7, and Dipotassium Glycyrrhizate as actives, while horace Sérum Acide salicylique + Niacinamide relies on Niacinamide, Zinc Pca, and Salicylic Acid. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Horace Sérum Acide salicylique + Niacinamide is better if you have
Paula's Choice Clinical 1% Retinol Treatment is better if you have
Paula's Choice Clinical 1% Retinol Treatment comes in at mid-range pricing with a 8.9 score, which is solid value at that tier.
Paula's Choice Clinical 1% Retinol Treatment edges ahead with a slightly stronger formulation, but Horace Sérum Acide salicylique + Niacinamide is still a solid pick.
Based on ingredient analysis, Paula's Choice Clinical 1% Retinol Treatment 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.
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