Guerlain ecrin 6 couleurs rue de servres combines steal greys taupes nudes and a shinnering cyane shade guerlain ecrin 6 couleurs rue de servres offers a range of three different eyeshadow textures in each of its harmonies consisting of 5 eyeshadows and 1 eyeliner it houses an iridescent formula with mother of pearl particles for intense colour radiance a matt finish formula for softness elegance and contrast and a satin fomrula for a velvet glide on finish and a delicate look