Which type of shampoo is specifically designed to add strength to brittle hair?

A strengthening shampoo is formulated specifically to address and repair the structural integrity of brittle hair. It often contains proteins and other strengthening agents that penetrate the hair shaft, helping to reinforce the hair and improve its resilience against damage. This type of shampoo is particularly beneficial for individuals whose hair is weak due to excessive styling, heat exposure, or environmental factors. Its primary purpose is to enhance the hair's durability, making it less prone to breakage and improving overall health and appearance.

In contrast, moisturizing shampoos focus primarily on hydration and adding moisture to dry hair rather than strengthening its structure. Clarifying shampoos are designed to remove product buildup and impurities from the hair, which does not specifically address brittleness or breakage. Color-protecting shampoos aim to preserve the vibrancy of colored hair, which again does not directly contribute to strengthening brittle strands. Therefore, for those looking to enhance the strength of brittle hair, a strengthening shampoo is undoubtedly the appropriate choice.