Postquam Haircare Total Repair Serum is a hair serum that is designed to repair weak or very weak hair. It contains a blend of ingredients that are said to help to strengthen, protect, and nourish the hair. Some of the key ingredients in the serum include: - Hydrolyzed keratin: This is a type of protein that is found in hair. It helps to strengthen and repair the hair shaft. - Panthenol: This is a form of vitamin B5 that is known for its moisturizing and healing properties. - Argan oil: This oil is rich in antioxidants and fatty acids that can help to protect the hair from damage. - Shea butter: This butter is rich in vitamins and minerals that can help to nourish the hair.