Guerlain precious light rejuvenating illuminator is a brilliant concealer that hides all imperfections and awakens the skins youthfulness with a single click of its magic wand brush guerlain precious light rejuvenating illuminator is a must have makeup tool that employs an exclusive double sided gold radiance pigment the opaque side targets imperfections and dull zones toning down the appearance of wrinkles dilated pores and pigment irregularities while the golden side reflects light it