The Keratin Shampoo Syoss from 500 ml is specifically designed for fine and fragile hair prone to breakage. Its formula enriched with keratin strengthens the hair fiber, providing greater resistance and volume without weighing it down. Gentle cleansing and deep nourishment come together to restore body and vitality to weakened hair. Ideal for those who want una hair that is stronger, healthier, and visibly fuller from the very first use. A perfect ally for una professional care at home.