Day Shield SPF 30 is an essential SPF facial spray from Decree - the no-frills dermatological skin care line by Dr AJ Sturnham. Making radiant skin an achievable standard through science and consistency, Decree products feature active ingredients in expertly balanced, therapeutic doses that promote tolerance for lasting results. Day Shield SPF performs multiple protective functions, shielding skin from UV rays as well as blue light from PC and phone screens. This rose water-based sophisticated environmental shield comes courtesy of titanium and zinc oxides, with the addition of collagen-protective peptides and antioxidants to keep skin firm and supple.'All SPFs degrade within hours, so reapplications are essential. This spray works invisibly over makeup.' ' Dr AJ Sturnham