Rouge G de Guerlain Lipstick CASE. Customize your lipstick! Guerlain has invented its first customize lipstick with a double mirror Rouge G de Guerlain. Choose your shade and then a case to create your own lipstick. For this exceptional lipstick, Guerlain has sealed intense colour and luscious lip care into a jewel formula. Enriched with plant-based polymers and silver microcrystals with a reflective power, this exceptional formula beautifully enhances lips, cloaking them in intense and luminous long-lasting colour. Jojoba and mango butter help to nourish lips, offering them instant and lasting comfort. Hyaluronic acid and gugul resin help to smooth and plump up lips. Please note these are not compatible with the old Rouge G de Guerlain non refillable lipsticks.