Double R Radiance & Repair Mask combines the power of two high-performance masks to restore hair's radiance and intensely repair the hair fibre in an original Guerlain double tube. Day after day, the scalp is strengthened, and the hair fibre is nourished and lastingly repaired. Hair's shine is enhanced. Hair is visibly stronger, with a silky look and feel. Its exclusive double texture developed according to the Guerlain art of formulation is made up of 95% naturally-derived ingredients