Protein treatments should be considered in hair care routines because they offer several benefits, particularly for individuals with hair that is damaged, weakened, or chemically treated. Here are some reasons why protein treatments can be beneficial:

1. **Strengthening**: Protein is a key component of hair structure. Protein treatments can help reinforce the hair shaft, making it stronger and more resilient to breakage. This is particularly important for hair that has been weakened by chemical treatments like coloring or perming.

2. **Repairing Damage**: Hair can become damaged from heat styling, environmental factors, or chemical processes. Protein treatments can help repair this damage by filling in gaps and cracks in the hair cuticle, which restores integrity and smoothness.

3. **Improved Elasticity**: Protein treatments can enhance the elasticity of hair, making it less prone to snapping or breaking when stretched or styled.

4. **Volume and Thickness**: Protein can temporarily swell the hair shaft, giving it more body and volume. This is beneficial for individuals with fine or thinning hair who desire a fuller appearance.

5. **Preventing Breakage**: By strengthening the hair and improving its structure, protein treatments can reduce the likelihood of split ends and breakage, promoting overall hair health.

6. **Restoring Keratin**: Many protein treatments contain keratin, which is a natural protein found in hair. These treatments can help replenish keratin levels, particularly if they have been depleted by styling or environmental factors.

Overall, protein treatments can play a crucial role in maintaining hair health, particularly for those experiencing damage or weakness. It is important, however, to find the right balance between protein and moisture to avoid potential issues like protein overload.