Moments of emotion. GUERLAIN L' Instant De Guerlain Eau de Toilette Spray is one of these unique moments where everything can change. A new sense envelops the woman, as if she were awakening to a new femininity. It is a moment frozen in time. GUERLAIN L' Instant De Guerlain inaugurates a new olfactory family, 'crystalline amber'. In the tradition of the great Guerlain perfumes, this perfume revisits the celebrated Guerlinade. Fragrance Description. Crystalline amber. The citrus-honey accord leads into a second accord of Chinese magnolia, exalted by Sambac jasmine & ylang-ylang which light up the amber accord. These three dominant accords fuse together to create a perfume of sensation & light.