What It Is: An illuminating concealer enriched with gold radiance pigments and rejuvenating complex to instantly conceal and brighten dark areas and visible signs of aging. What It Does: Like a magic wand, the Guerlain Precious Light pen instantly conceals dark areas and visible signs of ageing. Enriched with a rejuvenating effect Precious complex and brightened by Gold Burst pigments, Precious Light reveals a refreshed natural complexion, providing the skin with the glow of renewed youth day after day. Innovative brush design allows for easy and travel-friendly application. Refresh your natural complexion with a subtle glow. Application Tips: Precious Light may be applied before or after applying makeup: to brighten dark areas: apply to the sides of the nose and hollow of chin. to make the complexion appear younger: target expression lines between the eyebrows, as well as crows' feet and the lip contour. to refresh the features: apply to dark circles, eye bags and tops of cheekbones.