The LunaGel™ Visible Light Photoinitiator, Lithium Phenyl-2,4,6-Trimethylbenzoylphosphinate (LAP), is a sterile, lyophilized formulation optimized for low-cytotoxicity, visible light crosslinking. It enables precise control over gel formation making it ideal for tunable hydrogel formation in 3D cell culture, tissue engineering, and bioprinting applications.