The brand’s signature product, the Longevity Protocol Serum + Moisturizer, replaces a traditional six-step routine by combining serum-grade actives with barrier-supporting moisturizers. At its core is the L-01™ complex, a reconstructed cell-signaling system designed to mimic the messenger proteins cells use for renewal. Che, who previously researched the skin secretome at Northwestern University, turned to plant-grown bio-identical peptides and growth factors when human cell sourcing proved unscalable.

To overcome the challenge of delivering large growth factors into the skin, Darkfin fused them to a lipid bilayer, a process developed using Microsoft AI Co-Innovation Labs. The resulting formula underwent two years of testing, culminating in a study of 80 participants with compromised skin. According to the company, these subjects showed measurable improvements in elasticity and line reduction over 28 days. A manuscript detailing these findings is currently in preparation for peer-reviewed publication, as the brand continues its expansion into cleansers and lip treatments.