The science
The most evidence-backed ingredient in this formula is adenosine, which has been studied extensively for topical anti-aging applications. A 2007 clinical study published in the Journal of Cosmetic Science (Abella et al.) demonstrated that twice-daily topical adenosine application significantly reduced skin roughness parameters after just three weeks, with continued improvement at eight weeks — a randomized, placebo-controlled trial that directly supports this cream's anti-wrinkle positioning. The mechanism was further elucidated by Shaikh et al. (2016) in the British Journal of Pharmacology, who showed that adenosine A2A receptor stimulation promotes collagen type I and type III synthesis in human dermal fibroblasts via cAMP/PKA and Wnt/beta-catenin signaling pathways. This provides a mechanistic explanation for how adenosine, even at modest concentrations, can support skin firmness over time.
The saccharomyces ferment filtrate — the processed form of Fresh's black tea ferment — belongs to a class of yeast-derived ferment filtrates with growing evidence for skin barrier support. A 2026 study published in the Journal of Photochemistry and Photobiology B (on a saccharomyces/pearl ferment lysate filtrate) demonstrated restoration of skin barrier proteins, suppression of UVB-induced inflammation, and activation of the Nrf2 antioxidant pathway in keratinocytes. While this specific study used a different ferment formulation than Fresh's proprietary version, the mechanism — fermentation metabolites supporting cellular antioxidant defenses — is analogous.
The firming peptide, Acetyl Dipeptide-1 Cetyl Ester, is where the evidence thins considerably. This lipopeptide is marketed as having muscle-relaxing and firming properties, but independent peer-reviewed research on this specific molecule is not published in indexed journals as of this writing. Supplier-provided in vitro data exists but has not been replicated or validated by independent researchers. This is not unusual for cosmetic peptides — the economics of clinical trials often don't justify the investment for peptide manufacturers — but it means the 'corset' firming claim rests more on proprietary data and consumer perception than on the kind of robust evidence that supports the adenosine in the same formula.
References 3 ShowHide
- Formulation, characterization, and efficacy of an adenosine-containing dissolvable film for a localized anti-wrinkle effect. — Journal of Cosmetic Science (2007)
- Adenosine A(2A) receptor promotes collagen type III synthesis via β-catenin activation in human dermal fibroblasts. — British Journal of Pharmacology (2016)
- Saccharomyces/pearl ferment lysate filtrate repairs UVB-induced skin barrier damage by regulating Nrf2/HO-1 and JNK/MAPK signaling pathways. — Journal of Photochemistry and Photobiology B: Biology (2026)