A while back, Marta had sent me a bottle of Skin Perfection’s Peptide Cocktail Anti Aging Serum ($96.99) with a note asking if I thought it was any better than Beautisol’s 99% Pure Peptide Rescue Advanced Serum ($120). The two skincare lines seem to have been separated at birth, and Marta has been calling them out ever since the discovery of Beautisol’s Eye Want Eye Gel and its lesser priced Skin Perfection twin. I had mentioned that I liked to use Beautisol’s Pure Peptide serum in my p.m. skincare routine. Peptides help to regenerate collagen, and I think it’s best to do this at night when the body is in regeneration mode. Copley had noted the virtues of the eight cutting-edge peptides in the Beautisol serum, which had influenced my decision to incorporate the serum into my regimen. The Skin Perfection Peptide Cocktail serum has a nearly identical formula that sells for about $25 less.

A side-by-side comparison of the serums’ ingredients reveal that the only differences are that the Beautisol formulation contains cymbopogon schoenanthus (lemongrass or camel grass oil), which serves as a fragrance, and PEG/PPG-20/15 dimethicone, giving the serum fluidity. However, I didn’t need to do an ingredient comparison to determine that the Skin Perfection serum lacked those ingredients – it was overwhelmingly obvious. One whiff of Skin Perfection’s malodorous potion was enough to justify the additional $25 in cost of Beautisol’s Pure Peptide Rescue serum – at least for me! But perhaps my olfactory senses are keener than most because I test so many products. The Smell Report study conducted by the University of Pennsylvania suggests that smell sensitivity can be a problem for researchers as subjects in repetitive experiments become increasingly skilled at detecting the odors involved. Skin Perfection’s Cocktail has all the right peptides, but it’s a shame it just doesn’t pass the smell test. Who knew lemongrass oil commanded such an exorbitant margin!

Ingredients in Skin Perfection Peptide Cocktail: Aqua (Water), Glycerin, Butylene Glycol, Hexapeptide‐11, Palmitoyl Tripeptide‐5, Pentapeptide‐18, Acetyl Hexapeptide‐8, Nonapeptide‐1, Acetyl Octapeptide‐3, Palmitoyl Oligopeptide, Palmitoyl Tetrapeptide‐7, Tripeptide‐1, Sodium Hyaluronate (L), Hydrolyzed Wheat Protein, Hydrolyzed Soy Protein, Xanthan Gum, Dextran, Carbomer, Caprylyl Glycol, Polysorbate 20

Ingredients in Beautisol 99% Pure Peptide Rescue: Aqua (Water), Glycerin, Butylene Glycol, Hexapeptide-11, Palmitoyl Tripeptide-5, Palmitoyl Oligopeptide, Palmitoyl Tetrapeptide-7, Pentapeptide-18, Acetyl Hexapeptide-8, Acetyl Octapeptide-3, Tripeptide-1, Nonapeptide-1, Hydrolyzed Soy Protein, Sodium Hyaluronate (L), Hydrolyzed Wheat Protein, Cymbopogon Schoenanthus (Lemongrass) Oil*, PEG/PPG-20/15 Dimethicone, Carbomer, Polysorbate 20, Caprylyl Glycol, Dextran, Xanthan Gum