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Dr. Dennis Gross Skincare Vitamin C Lactic Firm & Bright Eye Treatment scores 9.2/9.8 vs Peter Thomas Roth FIRMx Collagen Moisturizer at 8.5/9.8. Dr. Dennis Gross Skincare Vitamin C Lactic Firm & Bright Eye Treatment wins for active ingredients.
Dr. Dennis Gross Skincare Vitamin C Lactic Firm & Bright Eye Treatment edges ahead, winning 1 of 5 attributes.
Scores last verified: June 2026
38 unique
9 in common
15 unique
Where Dr. Dennis Gross Skincare Vitamin C Lactic Firm & Bright Eye Treatment really shines is active ingredient strength, scoring 9.8 compared to Peter Thomas Roth FIRMx Collagen Moisturizer's 5.9. Its formula features Tetrahexyldecyl Ascorbate, Ascorbic Acid, and Lactic Acid in high positions, signalling meaningful concentrations.
Dr. Dennis Gross Skincare Vitamin C Lactic Firm & Bright Eye Treatment brings Tetrahexyldecyl Ascorbate, Ascorbic Acid, and Lactic Acid 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.
Dr. Dennis Gross Skincare Vitamin C Lactic Firm & Bright Eye Treatment is better if you have
Peter Thomas Roth FIRMx Collagen Moisturizer is better if you have
Both sit in the premium bracket, so value comes down to formulation quality. Dr. Dennis Gross Skincare Vitamin C Lactic Firm & Bright Eye Treatment gets the nod here with its 9.2 overall score — you're getting more for a similar outlay.
Dr. Dennis Gross Skincare Vitamin C Lactic Firm & Bright Eye Treatment edges ahead with a slightly stronger formulation, but Peter Thomas Roth FIRMx Collagen Moisturizer is still a solid pick.
Based on ingredient analysis, Dr. Dennis Gross Skincare Vitamin C Lactic Firm & Bright Eye 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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