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Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C scores 8.6/9.8 and Peter Thomas Roth FIRMx Collagen Moisturizer 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
59 unique
9 in common
15 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.
Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C brings Ascorbyl Glucoside, Tocopheryl Acetate, and Niacinamide 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.
Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C is better if you have
Peter Thomas Roth FIRMx Collagen Moisturizer is better if you have
At luxury pricing with a score of 8.6, Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C 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.
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, Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C 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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© 2026 Gracie. All rights reserved. Data sourced from Open Beauty Facts (ODbL) and EU CosIng.