PhotoSericin with Ruthenium kit is 1 gram of lyophilized, sterile, methacrylated sericin with 100 mg Ruthenium and 500 mg Sodium Persulfate. PhotoSericin provides 3D hydrogels with the unique attributes to be prepared at various concentrations and photocrosslinked (requires a photoinitiator) to provide various gel stiffness. PhotoSericin is a highly versatile solution designed for researchers and scientists seeking advanced materials for tissue engineering, drug delivery, and regenerative medicine applications. PhotoSericin provides 3D tunable gels with the unique attributes to be prepared at various concentrations and crosslinked to provide various gel stiffnesses. The photoinitiator consists of Ruthenium and Sodium Persulfate which allows visible light crosslinking of the sericin at 400-450 nm. The photoinitiator is provided separately as a powder to provide customization and precise control over the crosslinking process.