Guerlain Precious Light Rejuvenating Illuminator Concealer 00 1.5ml / 0.05oz Guerlain Precious Light Rejuvenating Illuminator hides all imperfections and brightens the complexion with a single click. This must-have makeup tool contains Gold Radiance Pigment to tone down the appearance of wrinkles, pores, and pigment irregularities while reflecting light to create radiance.