Primers Smooth and Protect Primer SPF 50 Sunscreen - 1 oz.;From the Primers Collection. Use protection smooth & protect primer SPF 50 Perfecting. Protecting. Oil free. Invisible Defense Technology delivers weightless broad spectrum sunscreen that imperceptibly protects skin against environmental damage without residue or weight. Skin Smoothing Complex powerfully blurs imperfections. Prolongs and enhances the look of makeup. Featuring Skin Smoothing Complex. Blurs pores, fine lines, and wrinkles with a powerful resurfacing effect. Invisible Defense Technology.