
Peter Thomas Roth
Firm X Collagen Serum
41%
Medium match
Low irritancy
3/4
key actives shared
33%
of the original's ingredients
Why it's a dupe
- Both are serums.
- Both contain:Sodium hyaluronateSoluble collagenGlycerin
- Both work for:Moisturizing
- The original also hasDipotassium glycyrrhizate
- Unlike the original, it hasPalmitoyl dipeptide-5 diaminobutyroyl hydroxythreoninePalmitoyl tripeptide-5Acetyl tetrapeptide-2
- It also works for:Anti-aging
















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