
Peter Thomas Roth
Firm X Collagen Serum
57%
Medium match
Low irritancy
4/10
key actives shared
1/1
hero shared
39%
of the original's ingredients
Why it's a dupe
- Both are serums.
- Same hero ingredients:Palmitoyl dipeptide-5 diaminobutyroyl hydroxythreonine
- Both contain:SqualaneGlycerinDimethicone
- Both contain peptides.
- Both work for:MoisturizingAnti-aging
- The original also hasCaprylic/capric triglyceridePhospholipidsGlycine soja oil
- Unlike the original, it hasPalmitoyl tripeptide-5Acetyl tetrapeptide-2Soluble collagen
















