Sunscreen is a crucial component of skincare routines, providing protection against harmful UV radiation. Over the years, advancements have been made to enhance the effectiveness of sunscreens. One such innovation is the addition of polyglutamic acid (PGA). This article will explore the benefits of

γ-PGA hydrogel is another form of γ-PGA. It is produced by gamma irradiating PGA to promote chemical cross-linking between monomer units. Microscopic examination of the γ-PGA hydrogel revealed a multi-pocket structure that can enhance water absorption due to the cross-linking of peptides.