Radiance in a Flash My Supertips, Guerlain's beauty-enhancing treatment that instantly tautens and illuminates facial features. It is the accomplice of your evenings. Just after the application of a moisturiser, apply Radiance in a Flash all over face and neck, with a touch of powder to shine in a flash, in the morning or the evening. To maximize the lifting effect, apply the care from the bottom to the top of the face: from chin to cheekbones, eyebrows to the hairline. All skin types. 15ml