Ducray shampoo elution. Dermatological shampoo with active protection. Directions: Shampoo and alternating frequently used of all types of treatments. To use: Apply to wet hair. Massage gently and rinse. Repeat the process and leave on for several minutes. Rinse thoroughly. Composition: zinc gluconate. Glycine. Vitamin B5. Base lavante sebógena not soft. Perfume hypoallergenic. No preservatives.