Benfotiamine

Benfotiamine is a lipid-soluble synthetic derivative of thiamine (vitamin B1), created by attaching a benzoyl group to the thiamine molecule, which dramatically increases its bioavailability and skin penetration compared to water-soluble thiamine. In cosmetic formulations, it is valued for its ability to inhibit advanced glycation end-products (AGEs), which are a key contributor to skin aging, loss of elasticity, and yellowing of the complexion. Formulators choose benfotiamine for anti-aging and brightening products because its fat-soluble nature allows it to integrate into lipid-rich formulations and penetrate the stratum corneum more effectively than standard B1 derivatives.