Double R Radiance u0026 Repair Mask: Dual Action for Luminous, Repaired Hair.The Double R Radiance u0026 Repair Mask unites the power of two high-performance formulas in an original Guerlain double tube, designed to restore hairu0027s radiance and intensely repair the hair fibre.Day after day, your scalp is strengthened, and the hair fibre feels deeply nourished and lastingly repaired. Hairu0027s shine is visibly enhanced, and it appears stronger with a silky look and feel.To use: Apply to the hair and apply from roots to tips. Leave for 10 minutes before massaging.