42.3 oz, The Salerm Cosmetics Hair Lab Multi-Protein Shampoo is a powerful and innovative product designed to address the specific needs of damaged hair. Enriched with low-molecular-weight hydrolyzed keratin, this shampoo works to replenish the hair's natural keratin levels, helping to strengthen and fortify each strand from the inside out. What sets this shampoo apart is its unique formulation that is rich in cystines, which are essential for promoting healthy hair growth and boosting body. In addition to keratin, this shampoo also contains collagen booster, filling action, and concentrated nutrients that work together to improve the overall health and appearance of your hair.One of the key benefits of using the Salerm Cosmetics Hair Lab Multi-Protein Shampoo is its paraben-free formula. This means that you can enjoy all the benefits of this powerful shampoo without having to worry about any potentially harmful ingredients. This shampoo is especially recommended for those with damaged hair who are looking to restore strength, shine, and vitality to their locks. By incorporating this shampoo into your hair care routine, you can expect to see visible improvements in the health and appearance of your hair over time. Say goodbye to weak, brittle hair and hello to strong, beautiful locks with the Salerm Cosmetics Hair Lab Multi-Protein Shampoo.