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Paula's Choice Clinical 1% Retinol Treatment scores 8.9/9.8 vs Peter Thomas Roth FIRMx Collagen Moisturizer at 8.5/9.8. Paula's Choice Clinical 1% Retinol Treatment wins for active ingredients.
Paula's Choice Clinical 1% Retinol Treatment edges ahead, winning 3 of 5 attributes.
Scores last verified: April 2026
35 unique
12 in common
12 unique
Where Paula's Choice Clinical 1% Retinol Treatment really shines is active ingredient strength, scoring 7.1 compared to Peter Thomas Roth FIRMx Collagen Moisturizer's 5.9. Its formula features Retinol, Palmitoyl Tetrapeptide-7, and Dipotassium Glycyrrhizate in high positions, signalling meaningful concentrations.
Hydration Efficacy is another area of separation. Paula's Choice Clinical 1% Retinol Treatment scores 9.8 here versus 9.1 for Peter Thomas Roth FIRMx Collagen Moisturizer. 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 peter Thomas Roth FIRMx Collagen Moisturizer relies on Collagen, Niacinamide, and Palmitoyl Tripeptide-1. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Paula's Choice Clinical 1% Retinol Treatment is better if you have
Peter Thomas Roth FIRMx Collagen Moisturizer is better if you have
At mid-range pricing with a score of 8.9, Paula's Choice Clinical 1% Retinol Treatment delivers strong value. Peter Thomas Roth FIRMx Collagen Moisturizer sits at the premium level with a 8.5 score — the extra cost doesn't translate to better scores here.
Paula's Choice Clinical 1% Retinol Treatment edges ahead with a slightly stronger formulation, but Peter Thomas Roth FIRMx Collagen Moisturizer 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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