Double hair visible youth expertise: radiance and repair. The Double R Radiance & Repair Mask combines the power of two high-performance masks to restore the hair's radiance and intensively repair the hair fibre - in an original Guerlain double tube. Day after day, the scalp is strengthened and the hair fibre is nourished and sustainably repaired. The shine of the hair is enhanced. Hair is visibly stronger and has a silky-smooth look and feel. Its exclusive dual consistency, developed according to the Guerlain art of formulation, is composed of 95% natural ingredients. Calculation based on the international ISO standard 16128, including water.