SunShield+ contains iron oxides, which help protect your skin from blue light emitted by digital devices.
Source: https://pubmed.ncbi.nlm.nih.gov/33210401/
Citations:
Bernstein, E. F., Sarkas, H. W., & Boland, P. (2020). Iron oxides in novel skin care formulations attenuate blue light for enhanced protection against skin damage. Journal of Cosmetic Dermatology, 20(2), 532–537. https://doi.org/10.1111/jocd.13803