
Peter Thomas Roth
Firm X Collagen Serum
61%
Medium match
Low irritancy
6/11
key actives shared
1/1
hero shared
26%
of the original's ingredients
Why it's a dupe
- Both are serums.
- Same hero ingredients:Acetyl tetrapeptide-2
- Both contain:SqualaneHydrolyzed collagenHydroxyprolineGlycerinDimethicone
- Both contain peptides.
- Both work for:MoisturizingAnti-aging
- The original also hasCysteineGlycogenDextran
- Unlike the original, it hasPalmitoyl dipeptide-5 diaminobutyroyl hydroxythreoninePalmitoyl tripeptide-5Soluble collagen
















