GLOWSCREEN™ SPF 40 is a lightweight, pearlescent formula that hydrates the skin, while acting as a luminous, makeup-gripping primer. SPF hack: It also doubles as a highlighter wherever you want an extra little dose of (sun)shine. GLOWSCREEN™ SPF 40 is a lightweight, pearlescent formula that hydrates the skin, while acting as a luminous, makeup-gripping primer. SPF hack: It also doubles as a highlighter wherever you want an extra little dose of (sun)shine.