The Fanola Fiber Fix Shampoo and Seal & Repair Duo is a hair care product set designed to help repair and strengthen hair. The Fiber Fix Shampoo is formulated to cleanse damaged hair gently, while the Seal & Repair acts as a stabilizer that seals the cuticle and strengthens the hair fiber. This duo is often used in conjunction with hair coloring or bleaching processes to protect the hair and prevent damage. The set you mentioned is in a 300 ML size.