
Peter Thomas Roth
Firm X Collagen Serum
63%
Medium match
Low irritancy
4/6
key actives shared
1/1
hero shared
36%
of the original's ingredients
Why it's a dupe
- Both are serums.
- Same hero ingredients:Palmitoyl tripeptide-5
- Both contain:SqualaneHydrolyzed collagenGlycerin
- Both contain peptides.
- Both work for:Anti-agingMoisturizing
- The original also hasCaprylic/capric triglycerideCarnosine
- Unlike the original, it hasPalmitoyl dipeptide-5 diaminobutyroyl hydroxythreonineAcetyl tetrapeptide-2Soluble collagen
















